1404977994 has 64 divisors (see below), whose sum is σ = 3572121600. Its totient is φ = 400981104.

The previous prime is 1404977983. The next prime is 1404977999. The reversal of 1404977994 is 4997794041.

1404977994 is a `hidden beast` number, since 140 + 497 + 7 + 9 + 9 + 4 = 666.

1404977994 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1404977994.

It is not an unprimeable number, because it can be changed into a prime (1404977999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515367 + ... + 518085.

It is an arithmetic number, because the mean of its divisors is an integer number (55814400).

Almost surely, 2^1404977994 is an apocalyptic number.

1404977994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1404977994 is an abundant number, since it is smaller than the sum of its proper divisors (2167143606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1404977994 is a wasteful number, since it uses less digits than its factorization.

1404977994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104 (or 4098 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1404977994 is about 37483.0360830069. The cubic root of 1404977994 is about 1120.0132848127.

The spelling of 1404977994 in words is "one billion, four hundred four million, nine hundred seventy-seven thousand, nine hundred ninety-four".