74439482897 has 12 divisors (see below), whose sum is σ = 80617388940. Its totient is φ = 68703717888.

The previous prime is 74439482879. The next prime is 74439482903. The reversal of 74439482897 is 79828493447.

It is a Cunningham number, because it is equal to 272836²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 18063628801 + 56375854096 = 134401^2 + 237436^2 .

It is not a de Polignac number, because 74439482897 - 2⁸ = 74439482641 is a prime.

It is a super-2 number, since 2×74439482897² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74439482827) 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, 1360493 + ... + 1414149.

It is an arithmetic number, because the mean of its divisors is an integer number (6718115745).

Almost surely, 2^74439482897 is an apocalyptic number.

It is an amenable number.

74439482897 is a deficient number, since it is larger than the sum of its proper divisors (6177906043).

74439482897 is a wasteful number, since it uses less digits than its factorization.

74439482897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61892 (or 61879 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 65.

The spelling of 74439482897 in words is "seventy-four billion, four hundred thirty-nine million, four hundred eighty-two thousand, eight hundred ninety-seven".