49857913 has 4 divisors (see below), whose sum is σ = 56980480. Its totient is φ = 42735348.

The previous prime is 49857901. The next prime is 49857917. The reversal of 49857913 is 31975894.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 49857913 - 2¹³ = 49849721 is a prime.

It is a super-2 number, since 2×49857913² = 4971622977431138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49857917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3561273 + ... + 3561286.

It is an arithmetic number, because the mean of its divisors is an integer number (14245120).

Almost surely, 2^49857913 is an apocalyptic number.

It is an amenable number.

49857913 is a deficient number, since it is larger than the sum of its proper divisors (7122567).

49857913 is an equidigital number, since it uses as much as digits as its factorization.

49857913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7122566.

The product of its digits is 272160, while the sum is 46.

The square root of 49857913 is about 7061.0135957949. The cubic root of 49857913 is about 368.0538501261.

The spelling of 49857913 in words is "forty-nine million, eight hundred fifty-seven thousand, nine hundred thirteen".