49172938 has 4 divisors (see below), whose sum is σ = 73759410. Its totient is φ = 24586468.

The previous prime is 49172927. The next prime is 49172947. The reversal of 49172938 is 83927194.

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., 31169889 + 18003049 = 5583^2 + 4243^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49172894 and 49172903.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12293233 + ... + 12293236.

Almost surely, 2^49172938 is an apocalyptic number.

49172938 is a deficient number, since it is larger than the sum of its proper divisors (24586472).

49172938 is a wasteful number, since it uses less digits than its factorization.

49172938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24586471.

The product of its digits is 108864, while the sum is 43.

The square root of 49172938 is about 7012.3418342234. The cubic root of 49172938 is about 366.3605641802.

The spelling of 49172938 in words is "forty-nine million, one hundred seventy-two thousand, nine hundred thirty-eight".