74445379 has 4 divisors (see below), whose sum is σ = 74539584. Its totient is φ = 74351176.

The previous prime is 74445367. The next prime is 74445403. The reversal of 74445379 is 97354447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97354447 = 263 ⋅370169.

It is a cyclic number.

It is not a de Polignac number, because 74445379 - 2⁵ = 74445347 is a prime.

It is a super-2 number, since 2×74445379² = 11084228908907282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74445359) 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, 45907 + ... + 47500.

It is an arithmetic number, because the mean of its divisors is an integer number (18634896).

Almost surely, 2^74445379 is an apocalyptic number.

74445379 is a deficient number, since it is larger than the sum of its proper divisors (94205).

74445379 is an equidigital number, since it uses as much as digits as its factorization.

74445379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94204.

The product of its digits is 423360, while the sum is 43.

The square root of 74445379 is about 8628.1735610731. The cubic root of 74445379 is about 420.6742364024.

The spelling of 74445379 in words is "seventy-four million, four hundred forty-five thousand, three hundred seventy-nine".