90741579 has 8 divisors (see below), whose sum is σ = 121032912. Its totient is φ = 60472320.

The previous prime is 90741559. The next prime is 90741583. The reversal of 90741579 is 97514709.

It is a happy number.

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

It is not a de Polignac number, because 90741579 - 2⁷ = 90741451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90741579.

It is not an unprimeable number, because it can be changed into a prime (90741559) 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, 12267 + ... + 18219.

It is an arithmetic number, because the mean of its divisors is an integer number (15129114).

Almost surely, 2^90741579 is an apocalyptic number.

90741579 is a deficient number, since it is larger than the sum of its proper divisors (30291333).

90741579 is a wasteful number, since it uses less digits than its factorization.

90741579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11037.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 90741579 is about 9525.8374435007. The cubic root of 90741579 is about 449.3679670351.

It can be divided in two parts, 907 and 41579, that added together give a triangular number (42486 = T₂₉₁).

The spelling of 90741579 in words is "ninety million, seven hundred forty-one thousand, five hundred seventy-nine".