90149744 has 40 divisors (see below), whose sum is σ = 179482560. Its totient is φ = 43849728.

The previous prime is 90149729. The next prime is 90149749. The reversal of 90149744 is 44794109.

It is a junction number, because it is equal to n+sod(n) for n = 90149698 and 90149707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90149749) 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, 91784 + ... + 92760.

It is an arithmetic number, because the mean of its divisors is an integer number (4487064).

Almost surely, 2^90149744 is an apocalyptic number.

It is an amenable number.

90149744 is a deficient number, since it is larger than the sum of its proper divisors (89332816).

90149744 is a wasteful number, since it uses less digits than its factorization.

90149744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 90149744 is about 9494.7219021939. The cubic root of 90149744 is about 448.3888789665.

The spelling of 90149744 in words is "ninety million, one hundred forty-nine thousand, seven hundred forty-four".