90864407 has 8 divisors (see below), whose sum is σ = 91584000. Its totient is φ = 90147960.

The previous prime is 90864391. The next prime is 90864409. The reversal of 90864407 is 70446809.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90864407 - 2⁴ = 90864391 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 (90864409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104858 + ... + 105720.

It is an arithmetic number, because the mean of its divisors is an integer number (11448000).

Almost surely, 2^90864407 is an apocalyptic number.

90864407 is a deficient number, since it is larger than the sum of its proper divisors (719593).

90864407 is a wasteful number, since it uses less digits than its factorization.

90864407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 90864407 is about 9532.2823604843. The cubic root of 90864407 is about 449.5706307752.

The spelling of 90864407 in words is "ninety million, eight hundred sixty-four thousand, four hundred seven".