90620389 has 8 divisors (see below), whose sum is σ = 93852000. Its totient is φ = 87395952.

The previous prime is 90620377. The next prime is 90620399. The reversal of 90620389 is 98302609.

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 90620389 - 2⁵ = 90620357 is a prime.

It is a super-2 number, since 2×90620389² = 16424109805022642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90620359) 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, 44802 + ... + 46780.

It is an arithmetic number, because the mean of its divisors is an integer number (11731500).

Almost surely, 2^90620389 is an apocalyptic number.

It is an amenable number.

90620389 is a deficient number, since it is larger than the sum of its proper divisors (3231611).

90620389 is a wasteful number, since it uses less digits than its factorization.

90620389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 90620389 is about 9519.4741976645. The cubic root of 90620389 is about 449.1678266410.

The spelling of 90620389 in words is "ninety million, six hundred twenty thousand, three hundred eighty-nine".