90332144438 has 8 divisors (see below), whose sum is σ = 135499791000. Its totient is φ = 45165547440.

The previous prime is 90332144423. The next prime is 90332144449. The reversal of 90332144438 is 83444123309.

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

It is a junction number, because it is equal to n+sod(n) for n = 90332144395 and 90332144404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8858 + ... + 425138.

It is an arithmetic number, because the mean of its divisors is an integer number (16937473875).

Almost surely, 2^90332144438 is an apocalyptic number.

90332144438 is a deficient number, since it is larger than the sum of its proper divisors (45167646562).

90332144438 is a wasteful number, since it uses less digits than its factorization.

90332144438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524782.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 90332144438 in words is "ninety billion, three hundred thirty-two million, one hundred forty-four thousand, four hundred thirty-eight".