49999619 has 2 divisors, whose sum is σ = 49999620. Its totient is φ = 49999618.

The previous prime is 49999613. The next prime is 49999627. The reversal of 49999619 is 91699994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49999619 - 2⁴ = 49999603 is a prime.

It is a super-2 number, since 2×49999619² = 4999923800290322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49999613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24999809 + 24999810.

It is an arithmetic number, because the mean of its divisors is an integer number (24999810).

Almost surely, 2^49999619 is an apocalyptic number.

49999619 is a deficient number, since it is larger than the sum of its proper divisors (1).

49999619 is an equidigital number, since it uses as much as digits as its factorization.

49999619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1417176, while the sum is 56.

The square root of 49999619 is about 7071.0408710458. The cubic root of 49999619 is about 368.4022141177.

The spelling of 49999619 in words is "forty-nine million, nine hundred ninety-nine thousand, six hundred nineteen".