49139711 has 4 divisors (see below), whose sum is σ = 49281672. Its totient is φ = 48997752.

The previous prime is 49139687. The next prime is 49139723. The reversal of 49139711 is 11793194.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49139711 is a prime.

It is a super-2 number, since 2×49139711² = 4829422394327042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40139711) 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, 70460 + ... + 71153.

It is an arithmetic number, because the mean of its divisors is an integer number (12320418).

Almost surely, 2^49139711 is an apocalyptic number.

49139711 is a deficient number, since it is larger than the sum of its proper divisors (141961).

49139711 is a wasteful number, since it uses less digits than its factorization.

49139711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141960.

The product of its digits is 6804, while the sum is 35.

The square root of 49139711 is about 7009.9722538681. The cubic root of 49139711 is about 366.2780268752.

The spelling of 49139711 in words is "forty-nine million, one hundred thirty-nine thousand, seven hundred eleven".