86744477 has 4 divisors (see below), whose sum is σ = 90516000. Its totient is φ = 82972956.

The previous prime is 86744467. The next prime is 86744491. The reversal of 86744477 is 77444768.

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 86744477 - 2⁴ = 86744461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86744407) 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, 1885727 + ... + 1885772.

It is an arithmetic number, because the mean of its divisors is an integer number (22629000).

Almost surely, 2^86744477 is an apocalyptic number.

It is an amenable number.

86744477 is a deficient number, since it is larger than the sum of its proper divisors (3771523).

86744477 is a wasteful number, since it uses less digits than its factorization.

86744477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771522.

The product of its digits is 1053696, while the sum is 47.

The square root of 86744477 is about 9313.6715102048. The cubic root of 86744477 is about 442.6705304189.

The spelling of 86744477 in words is "eighty-six million, seven hundred forty-four thousand, four hundred seventy-seven".