49984978 has 4 divisors (see below), whose sum is σ = 74977470. Its totient is φ = 24992488.

The previous prime is 49984967. The next prime is 49984993. The reversal of 49984978 is 87948994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48678529 + 1306449 = 6977^2 + 1143^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12496243 + ... + 12496246.

Almost surely, 2^49984978 is an apocalyptic number.

49984978 is a deficient number, since it is larger than the sum of its proper divisors (24992492).

49984978 is a wasteful number, since it uses less digits than its factorization.

49984978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24992491.

The product of its digits is 5225472, while the sum is 58.

The square root of 49984978 is about 7070.0055162638. The cubic root of 49984978 is about 368.3662518211.

The spelling of 49984978 in words is "forty-nine million, nine hundred eighty-four thousand, nine hundred seventy-eight".