49873897 has 4 divisors (see below), whose sum is σ = 49982080. Its totient is φ = 49765716.

The previous prime is 49873871. The next prime is 49873907. The reversal of 49873897 is 79837894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79837894 = 2 ⋅39918947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49873897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49873297) 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, 53397 + ... + 54322.

It is an arithmetic number, because the mean of its divisors is an integer number (12495520).

Almost surely, 2^49873897 is an apocalyptic number.

It is an amenable number.

49873897 is a deficient number, since it is larger than the sum of its proper divisors (108183).

49873897 is a wasteful number, since it uses less digits than its factorization.

49873897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108182.

The product of its digits is 3048192, while the sum is 55.

The square root of 49873897 is about 7062.1453539275. The cubic root of 49873897 is about 368.0931775121.

The spelling of 49873897 in words is "forty-nine million, eight hundred seventy-three thousand, eight hundred ninety-seven".