49657919 has 2 divisors, whose sum is σ = 49657920. Its totient is φ = 49657918.

The previous prime is 49657913. The next prime is 49657973. The reversal of 49657919 is 91975694.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49657919 - 2⁴ = 49657903 is a prime.

It is a super-2 number, since 2×49657919² = 4931817838821122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49657913) 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 as a sum of consecutive naturals, namely, 24828959 + 24828960.

It is an arithmetic number, because the mean of its divisors is an integer number (24828960).

Almost surely, 2^49657919 is an apocalyptic number.

49657919 is a deficient number, since it is larger than the sum of its proper divisors (1).

49657919 is an equidigital number, since it uses as much as digits as its factorization.

49657919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 50.

The square root of 49657919 is about 7046.8375176387. The cubic root of 49657919 is about 367.5610684145.

The spelling of 49657919 in words is "forty-nine million, six hundred fifty-seven thousand, nine hundred nineteen".