49399942 has 4 divisors (see below), whose sum is σ = 74099916. Its totient is φ = 24699970.

The previous prime is 49399937. The next prime is 49399949. The reversal of 49399942 is 24999394.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49399949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12349984 + ... + 12349987.

It is an arithmetic number, because the mean of its divisors is an integer number (18524979).

Almost surely, 2^49399942 is an apocalyptic number.

49399942 is a deficient number, since it is larger than the sum of its proper divisors (24699974).

49399942 is a wasteful number, since it uses less digits than its factorization.

49399942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24699973.

The product of its digits is 629856, while the sum is 49.

The square root of 49399942 is about 7028.5092302707. The cubic root of 49399942 is about 366.9234596003.

The spelling of 49399942 in words is "forty-nine million, three hundred ninety-nine thousand, nine hundred forty-two".