49729619 has 4 divisors (see below), whose sum is σ = 50787744. Its totient is φ = 48671496.

The previous prime is 49729567. The next prime is 49729621. The reversal of 49729619 is 91692794.

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-49729619 is a prime.

It is a super-2 number, since 2×49729619² = 4946070011770322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 1058077 = 49729619 / (4 + 9 + 7 + 2 + 9 + 6 + 1 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49729639) 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, 528992 + ... + 529085.

It is an arithmetic number, because the mean of its divisors is an integer number (12696936).

Almost surely, 2^49729619 is an apocalyptic number.

49729619 is a deficient number, since it is larger than the sum of its proper divisors (1058125).

49729619 is a wasteful number, since it uses less digits than its factorization.

49729619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058124.

The product of its digits is 244944, while the sum is 47.

The square root of 49729619 is about 7051.9230710495. The cubic root of 49729619 is about 367.7378878439.

The spelling of 49729619 in words is "forty-nine million, seven hundred twenty-nine thousand, six hundred nineteen".