90945826 has 4 divisors (see below), whose sum is σ = 136418742. Its totient is φ = 45472912.

The previous prime is 90945823. The next prime is 90945857. The reversal of 90945826 is 62854909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62854909 = 13 ⋅4834993.

It can be written as a sum of positive squares in only one way, i.e., 84180625 + 6765201 = 9175^2 + 2601^2 .

It is a super-2 number, since 2×90945826² = 16542286533644552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90945823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22736455 + ... + 22736458.

Almost surely, 2^90945826 is an apocalyptic number.

90945826 is a deficient number, since it is larger than the sum of its proper divisors (45472916).

90945826 is a wasteful number, since it uses less digits than its factorization.

90945826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45472915.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 90945826 is about 9536.5521023062. The cubic root of 90945826 is about 449.7048698572.

The spelling of 90945826 in words is "ninety million, nine hundred forty-five thousand, eight hundred twenty-six".