1044442987 has 6 divisors (see below), whose sum is σ = 1214964348. Its totient is φ = 895236804.

The previous prime is 1044442981. The next prime is 1044443003. The reversal of 1044442987 is 7892444401.

It is a happy number.

It is not a de Polignac number, because 1044442987 - 2²⁷ = 910225259 is a prime.

It is a super-2 number, since 2×1044442987² = 2181722306186964338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1044442981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10657533 + ... + 10657630.

It is an arithmetic number, because the mean of its divisors is an integer number (202494058).

Almost surely, 2^1044442987 is an apocalyptic number.

1044442987 is a deficient number, since it is larger than the sum of its proper divisors (170521361).

1044442987 is an equidigital number, since it uses as much as digits as its factorization.

1044442987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21315177 (or 21315170 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 1044442987 is about 32317.8431675135. The cubic root of 1044442987 is about 1014.6001278605.

The spelling of 1044442987 in words is "one billion, forty-four million, four hundred forty-two thousand, nine hundred eighty-seven".