50779989 has 48 divisors (see below), whose sum is σ = 84913920. Its totient is φ = 28978560.

The previous prime is 50779987. The next prime is 50779991. The reversal of 50779989 is 98997705.

It is an interprime number because it is at equal distance from previous prime (50779987) and next prime (50779991).

It is not a de Polignac number, because 50779989 - 2¹ = 50779987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50779987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117604 + ... + 118034.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^50779989 is an apocalyptic number.

It is an amenable number.

50779989 is a deficient number, since it is larger than the sum of its proper divisors (34133931).

50779989 is a wasteful number, since it uses less digits than its factorization.

50779989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 50779989 is about 7126.0079287073. The cubic root of 50779989 is about 370.3089433296.

The spelling of 50779989 in words is "fifty million, seven hundred seventy-nine thousand, nine hundred eighty-nine".