74427091 has 4 divisors (see below), whose sum is σ = 76438672. Its totient is φ = 72415512.

The previous prime is 74427083. The next prime is 74427097. The reversal of 74427091 is 19072447.

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

It is not a de Polignac number, because 74427091 - 2³ = 74427083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74427097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005735 + ... + 1005808.

It is an arithmetic number, because the mean of its divisors is an integer number (19109668).

Almost surely, 2^74427091 is an apocalyptic number.

74427091 is a deficient number, since it is larger than the sum of its proper divisors (2011581).

74427091 is a wasteful number, since it uses less digits than its factorization.

74427091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011580.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 74427091 is about 8627.1137120128. The cubic root of 74427091 is about 420.6397864446.

The spelling of 74427091 in words is "seventy-four million, four hundred twenty-seven thousand, ninety-one".