90829805 has 32 divisors (see below), whose sum is σ = 122145408. Its totient is φ = 64288000.

The previous prime is 90829777. The next prime is 90829807. The reversal of 90829805 is 50892809.

It is a happy number.

It is not a de Polignac number, because 90829805 - 2¹⁶ = 90764269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90829807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 460967 + ... + 461163.

It is an arithmetic number, because the mean of its divisors is an integer number (3817044).

Almost surely, 2^90829805 is an apocalyptic number.

It is an amenable number.

90829805 is a deficient number, since it is larger than the sum of its proper divisors (31315603).

90829805 is a wasteful number, since it uses less digits than its factorization.

90829805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 90829805 is about 9530.4671973624. The cubic root of 90829805 is about 449.5135566559.

The spelling of 90829805 in words is "ninety million, eight hundred twenty-nine thousand, eight hundred five".