87862969 has 4 divisors (see below), whose sum is σ = 88024144. Its totient is φ = 87701796.

The previous prime is 87862963. The next prime is 87862979. The reversal of 87862969 is 96926878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87862969 - 2⁵ = 87862937 is a prime.

It is a super-2 number, since 2×87862969² = 15439802642989922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87862963) 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, 79767 + ... + 80860.

It is an arithmetic number, because the mean of its divisors is an integer number (22006036).

Almost surely, 2^87862969 is an apocalyptic number.

It is an amenable number.

87862969 is a deficient number, since it is larger than the sum of its proper divisors (161175).

87862969 is a wasteful number, since it uses less digits than its factorization.

87862969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161174.

The product of its digits is 2612736, while the sum is 55.

The square root of 87862969 is about 9373.5248972838. The cubic root of 87862969 is about 444.5650237672.

It can be divided in two parts, 87862 and 969, that added together give a triangular number (88831 = T₄₂₁).

The spelling of 87862969 in words is "eighty-seven million, eight hundred sixty-two thousand, nine hundred sixty-nine".