90808949 has 8 divisors (see below), whose sum is σ = 113216448. Its totient is φ = 70760160.

The previous prime is 90808933. The next prime is 90808969. The reversal of 90808949 is 94980809.

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

It is a cyclic number.

It is not a de Polignac number, because 90808949 - 2⁴ = 90808933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90808969) 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, 589592 + ... + 589745.

It is an arithmetic number, because the mean of its divisors is an integer number (14152056).

Almost surely, 2^90808949 is an apocalyptic number.

It is an amenable number.

90808949 is a deficient number, since it is larger than the sum of its proper divisors (22407499).

90808949 is a wasteful number, since it uses less digits than its factorization.

90808949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179355.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 90808949 is about 9529.3729594344. The cubic root of 90808949 is about 449.4791488152.

The spelling of 90808949 in words is "ninety million, eight hundred eight thousand, nine hundred forty-nine".