49999519 has 4 divisors (see below), whose sum is σ = 50393344. Its totient is φ = 49605696.

The previous prime is 49999489. The next prime is 49999529. The reversal of 49999519 is 91599994.

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

It is a cyclic number.

It is not a de Polignac number, because 49999519 - 2²¹ = 47902367 is a prime.

It is a super-2 number, since 2×49999519² = 4999903800462722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49999519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196722 + ... + 196975.

It is an arithmetic number, because the mean of its divisors is an integer number (12598336).

Almost surely, 2^49999519 is an apocalyptic number.

49999519 is a deficient number, since it is larger than the sum of its proper divisors (393825).

49999519 is a wasteful number, since it uses less digits than its factorization.

49999519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393824.

The product of its digits is 1180980, while the sum is 55.

The square root of 49999519 is about 7071.0337999475. The cubic root of 49999519 is about 368.4019685141.

The spelling of 49999519 in words is "forty-nine million, nine hundred ninety-nine thousand, five hundred nineteen".