90458709 has 16 divisors (see below), whose sum is σ = 131803200. Its totient is φ = 54728960.

The previous prime is 90458699. The next prime is 90458761. The reversal of 90458709 is 90785409.

It is not a de Polignac number, because 90458709 - 2¹³ = 90450517 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90458009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20317 + ... + 24365.

It is an arithmetic number, because the mean of its divisors is an integer number (8237700).

Almost surely, 2^90458709 is an apocalyptic number.

It is an amenable number.

90458709 is a deficient number, since it is larger than the sum of its proper divisors (41344491).

90458709 is a wasteful number, since it uses less digits than its factorization.

90458709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4740.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 90458709 is about 9510.9783408438. The cubic root of 90458709 is about 448.9005406326.

The spelling of 90458709 in words is "ninety million, four hundred fifty-eight thousand, seven hundred nine".