74944137 has 4 divisors (see below), whose sum is σ = 99925520. Its totient is φ = 49962756.

The previous prime is 74944127. The next prime is 74944159. The reversal of 74944137 is 73144947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73144947 = 3 ⋅24381649.

It is not a de Polignac number, because 74944137 - 2⁸ = 74943881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74944095 and 74944104.

It is not an unprimeable number, because it can be changed into a prime (74944117) 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, 12490687 + ... + 12490692.

It is an arithmetic number, because the mean of its divisors is an integer number (24981380).

Almost surely, 2^74944137 is an apocalyptic number.

It is an amenable number.

74944137 is a deficient number, since it is larger than the sum of its proper divisors (24981383).

74944137 is a wasteful number, since it uses less digits than its factorization.

74944137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24981382.

The product of its digits is 84672, while the sum is 39.

The square root of 74944137 is about 8657.0281852377. The cubic root of 74944137 is about 421.6116029132.

The spelling of 74944137 in words is "seventy-four million, nine hundred forty-four thousand, one hundred thirty-seven".