1044402987 has 8 divisors (see below), whose sum is σ = 1392817104. Its totient is φ = 696128768.

The previous prime is 1044402979. The next prime is 1044403057. The reversal of 1044402987 is 7892044401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1044402987 - 2³ = 1044402979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1044402917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16098 + ... + 48455.

It is an arithmetic number, because the mean of its divisors is an integer number (174102138).

Almost surely, 2^1044402987 is an apocalyptic number.

1044402987 is a deficient number, since it is larger than the sum of its proper divisors (348414117).

1044402987 is an equidigital number, since it uses as much as digits as its factorization.

1044402987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69949.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1044402987 is about 32317.2243084087. The cubic root of 1044402987 is about 1014.5871753350.

The spelling of 1044402987 in words is "one billion, forty-four million, four hundred two thousand, nine hundred eighty-seven".