74837109 has 4 divisors (see below), whose sum is σ = 99782816. Its totient is φ = 49891404.

The previous prime is 74837099. The next prime is 74837123. The reversal of 74837109 is 90173847.

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.

It is a de Polignac number, because none of the positive numbers 2^k-74837109 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 (74837129) 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, 12472849 + ... + 12472854.

It is an arithmetic number, because the mean of its divisors is an integer number (24945704).

Almost surely, 2^74837109 is an apocalyptic number.

It is an amenable number.

74837109 is a deficient number, since it is larger than the sum of its proper divisors (24945707).

74837109 is a wasteful number, since it uses less digits than its factorization.

74837109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24945706.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 74837109 is about 8650.8444096516. The cubic root of 74837109 is about 421.4108055985.

The spelling of 74837109 in words is "seventy-four million, eight hundred thirty-seven thousand, one hundred nine".