1004477940 has 144 divisors (see below), whose sum is σ = 3231883200. Its totient is φ = 251817984.

The previous prime is 1004477879. The next prime is 1004477953. The reversal of 1004477940 is 497744001.

1004477940 is a `hidden beast` number, since 100 + 447 + 79 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1004477895 and 1004477904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 474324 + ... + 476436.

Almost surely, 2^1004477940 is an apocalyptic number.

1004477940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1004477940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1615941600).

1004477940 is an abundant number, since it is smaller than the sum of its proper divisors (2227405260).

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

1004477940 is a wasteful number, since it uses less digits than its factorization.

1004477940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1004477940 is about 31693.4999645038. The cubic root of 1004477940 is about 1001.4904241988.

The spelling of 1004477940 in words is "one billion, four million, four hundred seventy-seven thousand, nine hundred forty".