49997998 has 8 divisors (see below), whose sum is σ = 78257808. Its totient is φ = 23912064.

The previous prime is 49997977. The next prime is 49997999. The reversal of 49997998 is 89979994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49997999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543411 + ... + 543502.

It is an arithmetic number, because the mean of its divisors is an integer number (9782226).

Almost surely, 2^49997998 is an apocalyptic number.

49997998 is a deficient number, since it is larger than the sum of its proper divisors (28259810).

49997998 is a wasteful number, since it uses less digits than its factorization.

49997998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086938.

The product of its digits is 13226976, while the sum is 64.

The square root of 49997998 is about 7070.9262476708. The cubic root of 49997998 is about 368.3982328444.

The spelling of 49997998 in words is "forty-nine million, nine hundred ninety-seven thousand, nine hundred ninety-eight".