49987619 has 16 divisors (see below), whose sum is σ = 56700000. Its totient is φ = 43653120.

The previous prime is 49987603. The next prime is 49987643. The reversal of 49987619 is 91678994.

It is a happy number.

It is not a de Polignac number, because 49987619 - 2⁴ = 49987603 is a prime.

It is a super-2 number, since 2×49987619² = 4997524106578322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49987919) 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, 111107 + ... + 111555.

It is an arithmetic number, because the mean of its divisors is an integer number (3543750).

Almost surely, 2^49987619 is an apocalyptic number.

49987619 is a deficient number, since it is larger than the sum of its proper divisors (6712381).

49987619 is a wasteful number, since it uses less digits than its factorization.

49987619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838.

The product of its digits is 979776, while the sum is 53.

The square root of 49987619 is about 7070.1922887571. The cubic root of 49987619 is about 368.3727393578.

The spelling of 49987619 in words is "forty-nine million, nine hundred eighty-seven thousand, six hundred nineteen".