49719939 has 16 divisors (see below), whose sum is σ = 69212160. Its totient is φ = 31711680.

The previous prime is 49719919. The next prime is 49719947. The reversal of 49719939 is 93991794.

It is not a de Polignac number, because 49719939 - 2⁵ = 49719907 is a prime.

It is a super-4 number, since 4×49719939⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49719891 and 49719900.

It is not an unprimeable number, because it can be changed into a prime (49719919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5274 + ... + 11280.

It is an arithmetic number, because the mean of its divisors is an integer number (4325760).

Almost surely, 2^49719939 is an apocalyptic number.

49719939 is a deficient number, since it is larger than the sum of its proper divisors (19492221).

49719939 is a wasteful number, since it uses less digits than its factorization.

49719939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130.

The product of its digits is 551124, while the sum is 51.

The square root of 49719939 is about 7051.2367000406. The cubic root of 49719939 is about 367.7140259161.

The spelling of 49719939 in words is "forty-nine million, seven hundred nineteen thousand, nine hundred thirty-nine".