90858738 has 8 divisors (see below), whose sum is σ = 181717488. Its totient is φ = 30286244.

The previous prime is 90858701. The next prime is 90858739. The reversal of 90858738 is 83785809.

It is a happy number.

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

90858738 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (90858739) 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, 7571556 + ... + 7571567.

It is an arithmetic number, because the mean of its divisors is an integer number (22714686).

Almost surely, 2^90858738 is an apocalyptic number.

90858738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90858738 is a wasteful number, since it uses less digits than its factorization.

90858738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15143128.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 90858738 is about 9531.9849978900. The cubic root of 90858738 is about 449.5612810603.

The spelling of 90858738 in words is "ninety million, eight hundred fifty-eight thousand, seven hundred thirty-eight".