49172794939 has 2 divisors, whose sum is σ = 49172794940. Its totient is φ = 49172794938.

The previous prime is 49172794919. The next prime is 49172794987. The reversal of 49172794939 is 93949727194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49172794939 - 2⁵ = 49172794907 is a prime.

It is a super-2 number, since 2×49172794939² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49172794919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24586397469 + 24586397470.

It is an arithmetic number, because the mean of its divisors is an integer number (24586397470).

Almost surely, 2^49172794939 is an apocalyptic number.

49172794939 is a deficient number, since it is larger than the sum of its proper divisors (1).

49172794939 is an equidigital number, since it uses as much as digits as its factorization.

49172794939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 64.

The spelling of 49172794939 in words is "forty-nine billion, one hundred seventy-two million, seven hundred ninety-four thousand, nine hundred thirty-nine".