90858723 has 4 divisors (see below), whose sum is σ = 121144968. Its totient is φ = 60572480.

The previous prime is 90858701. The next prime is 90858739. The reversal of 90858723 is 32785809.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90858723 - 2²¹ = 88761571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90858023) 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, 15143118 + ... + 15143123.

It is an arithmetic number, because the mean of its divisors is an integer number (30286242).

Almost surely, 2^90858723 is an apocalyptic number.

90858723 is a deficient number, since it is larger than the sum of its proper divisors (30286245).

90858723 is a wasteful number, since it uses less digits than its factorization.

90858723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30286244.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 90858723 is about 9531.9842110654. The cubic root of 90858723 is about 449.5612563207.

The spelling of 90858723 in words is "ninety million, eight hundred fifty-eight thousand, seven hundred twenty-three".