90393639409 has 8 divisors (see below), whose sum is σ = 91692663552. Its totient is φ = 89096257440.

The previous prime is 90393639383. The next prime is 90393639461. The reversal of 90393639409 is 90493639309.

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 90393639409 - 2⁵ = 90393639377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90393639409.

It is not an unprimeable number, because it can be changed into a prime (90394639409) 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, 299449 + ... + 520054.

It is an arithmetic number, because the mean of its divisors is an integer number (11461582944).

Almost surely, 2^90393639409 is an apocalyptic number.

It is an amenable number.

90393639409 is a deficient number, since it is larger than the sum of its proper divisors (1299024143).

90393639409 is a wasteful number, since it uses less digits than its factorization.

90393639409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821087.

The product of its (nonzero) digits is 4251528, while the sum is 55.

The spelling of 90393639409 in words is "ninety billion, three hundred ninety-three million, six hundred thirty-nine thousand, four hundred nine".