74490907 has 4 divisors (see below), whose sum is σ = 74607400. Its totient is φ = 74374416.

The previous prime is 74490901. The next prime is 74490959. The reversal of 74490907 is 70909447.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74490907 - 2¹¹ = 74488859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74490907.

It is not an unprimeable number, because it can be changed into a prime (74490901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57282 + ... + 58567.

It is an arithmetic number, because the mean of its divisors is an integer number (18651850).

Almost surely, 2^74490907 is an apocalyptic number.

74490907 is a deficient number, since it is larger than the sum of its proper divisors (116493).

74490907 is a wasteful number, since it uses less digits than its factorization.

74490907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116492.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 74490907 is about 8630.8114913952. The cubic root of 74490907 is about 420.7599751185.

The spelling of 74490907 in words is "seventy-four million, four hundred ninety thousand, nine hundred seven".