90799405 has 8 divisors (see below), whose sum is σ = 110585952. Its totient is φ = 71555088.

The previous prime is 90799381. The next prime is 90799409. The reversal of 90799405 is 50499709.

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 90799405 - 2⁹ = 90798893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90799409) 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, 135187 + ... + 135856.

It is an arithmetic number, because the mean of its divisors is an integer number (13823244).

Almost surely, 2^90799405 is an apocalyptic number.

It is an amenable number.

90799405 is a deficient number, since it is larger than the sum of its proper divisors (19786547).

90799405 is a wasteful number, since it uses less digits than its factorization.

90799405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271115.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 90799405 is about 9528.8721788048. The cubic root of 90799405 is about 449.4634015446.

It can be divided in two parts, 90799 and 405, that added together give a square (91204 = 302²).

The spelling of 90799405 in words is "ninety million, seven hundred ninety-nine thousand, four hundred five".