90572839 has 8 divisors (see below), whose sum is σ = 103569440. Its totient is φ = 77590656.

The previous prime is 90572831. The next prime is 90572843. The reversal of 90572839 is 93827509.

It is a happy number.

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 90572839 - 2³ = 90572831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90572795 and 90572804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90572831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22147 + ... + 25915.

It is an arithmetic number, because the mean of its divisors is an integer number (12946180).

Almost surely, 2^90572839 is an apocalyptic number.

90572839 is a deficient number, since it is larger than the sum of its proper divisors (12996601).

90572839 is a wasteful number, since it uses less digits than its factorization.

90572839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 90572839 is about 9516.9763580667. The cubic root of 90572839 is about 449.0892509948.

The spelling of 90572839 in words is "ninety million, five hundred seventy-two thousand, eight hundred thirty-nine".