49159919 has 4 divisors (see below), whose sum is σ = 49179144. Its totient is φ = 49140696.

The previous prime is 49159907. The next prime is 49159963. The reversal of 49159919 is 91995194.

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-49159919 is a prime.

It is a super-2 number, since 2×49159919² = 4833395272173122, 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 (49159969) 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, 5057 + ... + 11130.

It is an arithmetic number, because the mean of its divisors is an integer number (12294786).

Almost surely, 2^49159919 is an apocalyptic number.

49159919 is a deficient number, since it is larger than the sum of its proper divisors (19225).

49159919 is a wasteful number, since it uses less digits than its factorization.

49159919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19224.

The product of its digits is 131220, while the sum is 47.

The square root of 49159919 is about 7011.4134808896. The cubic root of 49159919 is about 366.3282288525.

The spelling of 49159919 in words is "forty-nine million, one hundred fifty-nine thousand, nine hundred nineteen".