90331442 has 8 divisors (see below), whose sum is σ = 141388416. Its totient is φ = 43201972.

The previous prime is 90331429. The next prime is 90331447. The reversal of 90331442 is 24413309.

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

It is not an unprimeable number, because it can be changed into a prime (90331447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981818 + ... + 981909.

It is an arithmetic number, because the mean of its divisors is an integer number (17673552).

Almost surely, 2^90331442 is an apocalyptic number.

90331442 is a deficient number, since it is larger than the sum of its proper divisors (51056974).

90331442 is a wasteful number, since it uses less digits than its factorization.

90331442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963752.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 90331442 is about 9504.2854544674. The cubic root of 90331442 is about 448.6899213751.

The spelling of 90331442 in words is "ninety million, three hundred thirty-one thousand, four hundred forty-two".