39457018409 has 4 divisors (see below), whose sum is σ = 39457756800. Its totient is φ = 39456280020.

The previous prime is 39457018399. The next prime is 39457018421. The reversal of 39457018409 is 90481075493.

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: 90481075493 = 211 ⋅428820263.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39457018409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39457018429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282209 + ... + 398190.

It is an arithmetic number, because the mean of its divisors is an integer number (9864439200).

Almost surely, 2^39457018409 is an apocalyptic number.

It is an amenable number.

39457018409 is a deficient number, since it is larger than the sum of its proper divisors (738391).

39457018409 is an equidigital number, since it uses as much as digits as its factorization.

39457018409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738390.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 39457018409 in words is "thirty-nine billion, four hundred fifty-seven million, eighteen thousand, four hundred nine".