90739449 has 12 divisors (see below), whose sum is σ = 135296512. Its totient is φ = 58541400.

The previous prime is 90739447. The next prime is 90739477. The reversal of 90739449 is 94493709.

It is not a de Polignac number, because 90739449 - 2¹ = 90739447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90739447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162337 + ... + 162894.

Almost surely, 2^90739449 is an apocalyptic number.

It is an amenable number.

90739449 is a deficient number, since it is larger than the sum of its proper divisors (44557063).

90739449 is a wasteful number, since it uses less digits than its factorization.

90739449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325268 (or 325265 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 90739449 is about 9525.7256416506. The cubic root of 90739449 is about 449.3644509650.

The spelling of 90739449 in words is "ninety million, seven hundred thirty-nine thousand, four hundred forty-nine".