74789090 has 16 divisors (see below), whose sum is σ = 134723520. Its totient is φ = 29892720.

The previous prime is 74789087. The next prime is 74789101. The reversal of 74789090 is 9098747.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18251 + ... + 21969.

It is an arithmetic number, because the mean of its divisors is an integer number (8420220).

Almost surely, 2^74789090 is an apocalyptic number.

74789090 is a deficient number, since it is larger than the sum of its proper divisors (59934430).

74789090 is a wasteful number, since it uses less digits than its factorization.

74789090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 74789090 is about 8648.0685704960. The cubic root of 74789090 is about 421.3206539996.

The spelling of 74789090 in words is "seventy-four million, seven hundred eighty-nine thousand, ninety".