87444923 has 16 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 79488000.

The previous prime is 87444913. The next prime is 87444943. The reversal of 87444923 is 32944478.

It is a cyclic number.

It is not a de Polignac number, because 87444923 - 2¹² = 87440827 is a prime.

It is a super-2 number, since 2×87444923² = 15293229116951858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87444913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75398 + ... + 76548.

It is an arithmetic number, because the mean of its divisors is an integer number (5987520).

Almost surely, 2^87444923 is an apocalyptic number.

87444923 is a deficient number, since it is larger than the sum of its proper divisors (8355397).

87444923 is a wasteful number, since it uses less digits than its factorization.

87444923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318.

The product of its digits is 193536, while the sum is 41.

The square root of 87444923 is about 9351.1990140302. The cubic root of 87444923 is about 443.8588325799.

The spelling of 87444923 in words is "eighty-seven million, four hundred forty-four thousand, nine hundred twenty-three".