74111391 has 6 divisors (see below), whose sum is σ = 107049800. Its totient is φ = 49407588.

The previous prime is 74111377. The next prime is 74111393. The reversal of 74111391 is 19311147.

It is not a de Polignac number, because 74111391 - 2¹³ = 74103199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74111393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4117291 + ... + 4117308.

Almost surely, 2^74111391 is an apocalyptic number.

74111391 is a deficient number, since it is larger than the sum of its proper divisors (32938409).

74111391 is a wasteful number, since it uses less digits than its factorization.

74111391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8234605 (or 8234602 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 74111391 is about 8608.7973027595. The cubic root of 74111391 is about 420.0441960294.

The spelling of 74111391 in words is "seventy-four million, one hundred eleven thousand, three hundred ninety-one".