87969923 has 4 divisors (see below), whose sum is σ = 89209008. Its totient is φ = 86730840.

The previous prime is 87969911. The next prime is 87969941. The reversal of 87969923 is 32996978.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87969923 - 2⁴ = 87969907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87969953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619436 + ... + 619577.

It is an arithmetic number, because the mean of its divisors is an integer number (22302252).

Almost surely, 2^87969923 is an apocalyptic number.

87969923 is a deficient number, since it is larger than the sum of its proper divisors (1239085).

87969923 is a wasteful number, since it uses less digits than its factorization.

87969923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239084.

The product of its digits is 1469664, while the sum is 53.

The square root of 87969923 is about 9379.2282731577. The cubic root of 87969923 is about 444.7453376053.

The spelling of 87969923 in words is "eighty-seven million, nine hundred sixty-nine thousand, nine hundred twenty-three".