86879977 has 4 divisors (see below), whose sum is σ = 87365520. Its totient is φ = 86394436.

The previous prime is 86879971. The next prime is 86879983. The reversal of 86879977 is 77997868.

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 an interprime number because it is at equal distance from previous prime (86879971) and next prime (86879983).

It is a cyclic number.

It is not a de Polignac number, because 86879977 - 2¹¹ = 86877929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86879971) 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, 242503 + ... + 242860.

It is an arithmetic number, because the mean of its divisors is an integer number (21841380).

Almost surely, 2^86879977 is an apocalyptic number.

It is an amenable number.

86879977 is a deficient number, since it is larger than the sum of its proper divisors (485543).

86879977 is a wasteful number, since it uses less digits than its factorization.

86879977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485542.

The product of its digits is 10668672, while the sum is 61.

The square root of 86879977 is about 9320.9429244042. The cubic root of 86879977 is about 442.9009030193.

The spelling of 86879977 in words is "eighty-six million, eight hundred seventy-nine thousand, nine hundred seventy-seven".