90049490 has 32 divisors (see below), whose sum is σ = 167443200. Its totient is φ = 34841664.

The previous prime is 90049471. The next prime is 90049511. The reversal of 90049490 is 9494009.

It is a self number, because there is not a number n which added to its sum of digits gives 90049490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73019 + ... + 74241.

It is an arithmetic number, because the mean of its divisors is an integer number (5232600).

Almost surely, 2^90049490 is an apocalyptic number.

90049490 is a deficient number, since it is larger than the sum of its proper divisors (77393710).

90049490 is a wasteful number, since it uses less digits than its factorization.

90049490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 90049490 is about 9489.4409740511. The cubic root of 90049490 is about 448.2226020931. Note that the first 3 decimals are identical.

The spelling of 90049490 in words is "ninety million, forty-nine thousand, four hundred ninety".