90477969 has 4 divisors (see below), whose sum is σ = 120637296. Its totient is φ = 60318644.

The previous prime is 90477967. The next prime is 90477973. The reversal of 90477969 is 96977409.

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 90477969 - 2¹ = 90477967 is a prime.

It is a super-2 number, since 2×90477969² = 16372525748729922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90477967) 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, 15079659 + ... + 15079664.

It is an arithmetic number, because the mean of its divisors is an integer number (30159324).

Almost surely, 2^90477969 is an apocalyptic number.

It is an amenable number.

90477969 is a deficient number, since it is larger than the sum of its proper divisors (30159327).

90477969 is a wasteful number, since it uses less digits than its factorization.

90477969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30159326.

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 90477969 is about 9511.9908010889. The cubic root of 90477969 is about 448.9323975648.

The spelling of 90477969 in words is "ninety million, four hundred seventy-seven thousand, nine hundred sixty-nine".