49578993 has 8 divisors (see below), whose sum is σ = 73450400. Its totient is φ = 33052644.

The previous prime is 49578989. The next prime is 49579003. The reversal of 49578993 is 39987594.

It is not a de Polignac number, because 49578993 - 2² = 49578989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49578943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918103 + ... + 918156.

It is an arithmetic number, because the mean of its divisors is an integer number (9181300).

Almost surely, 2^49578993 is an apocalyptic number.

It is an amenable number.

49578993 is a deficient number, since it is larger than the sum of its proper divisors (23871407).

49578993 is a wasteful number, since it uses less digits than its factorization.

49578993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836268 (or 1836262 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 49578993 is about 7041.2351899365. The cubic root of 49578993 is about 367.3662320315.

The spelling of 49578993 in words is "forty-nine million, five hundred seventy-eight thousand, nine hundred ninety-three".