74490406 has 4 divisors (see below), whose sum is σ = 111735612. Its totient is φ = 37245202.

The previous prime is 74490401. The next prime is 74490457. The reversal of 74490406 is 60409447.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74490401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18622600 + ... + 18622603.

It is an arithmetic number, because the mean of its divisors is an integer number (27933903).

Almost surely, 2^74490406 is an apocalyptic number.

74490406 is a deficient number, since it is larger than the sum of its proper divisors (37245206).

74490406 is a wasteful number, since it uses less digits than its factorization.

74490406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37245205.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 74490406 is about 8630.7824674244. The cubic root of 74490406 is about 420.7590318212.

The spelling of 74490406 in words is "seventy-four million, four hundred ninety thousand, four hundred six".