74404431 has 12 divisors (see below), whose sum is σ = 109760352. Its totient is φ = 48547296.

The previous prime is 74404423. The next prime is 74404441. The reversal of 74404431 is 13440447.

It is not a de Polignac number, because 74404431 - 2³ = 74404423 is a prime.

It is a super-2 number, since 2×74404431² = 11072038704867522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74404395 and 74404404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74404441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87526 + ... + 88371.

It is an arithmetic number, because the mean of its divisors is an integer number (9146696).

Almost surely, 2^74404431 is an apocalyptic number.

74404431 is a deficient number, since it is larger than the sum of its proper divisors (35355921).

74404431 is a wasteful number, since it uses less digits than its factorization.

74404431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175950 (or 175947 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 74404431 is about 8625.8003106958. The cubic root of 74404431 is about 420.5970929176.

Adding to 74404431 its reverse (13440447), we get a palindrome (87844878).

The spelling of 74404431 in words is "seventy-four million, four hundred four thousand, four hundred thirty-one".