90844742 has 8 divisors (see below), whose sum is σ = 137517600. Its totient is φ = 45005544.

The previous prime is 90844739. The next prime is 90844759. The reversal of 90844742 is 24744809.

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 = 90844696 and 90844705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208142 + ... + 208577.

It is an arithmetic number, because the mean of its divisors is an integer number (17189700).

Almost surely, 2^90844742 is an apocalyptic number.

90844742 is a deficient number, since it is larger than the sum of its proper divisors (46672858).

90844742 is a wasteful number, since it uses less digits than its factorization.

90844742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416830.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 90844742 is about 9531.2508098360. The cubic root of 90844742 is about 449.5381962038.

The spelling of 90844742 in words is "ninety million, eight hundred forty-four thousand, seven hundred forty-two".