1404978012 has 18 divisors (see below), whose sum is σ = 3551472288. Its totient is φ = 468325992.

The previous prime is 1404977999. The next prime is 1404978017. The reversal of 1404978012 is 2108794041.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 39027167 = 1404978012 / (1 + 4 + 0 + 4 + 9 + 7 + 8 + 0 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404978017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19513548 + ... + 19513619.

It is an arithmetic number, because the mean of its divisors is an integer number (197304016).

Almost surely, 2^1404978012 is an apocalyptic number.

1404978012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1404978012 is an abundant number, since it is smaller than the sum of its proper divisors (2146494276).

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

1404978012 is a wasteful number, since it uses less digits than its factorization.

1404978012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39027177 (or 39027172 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1404978012 is about 37483.0363231156. The cubic root of 1404978012 is about 1120.0132895957.

The spelling of 1404978012 in words is "one billion, four hundred four million, nine hundred seventy-eight thousand, twelve".