49397817 has 24 divisors (see below), whose sum is σ = 77985856. Its totient is φ = 27244224.

The previous prime is 49397807. The next prime is 49397839. The reversal of 49397817 is 71879394.

It is not a de Polignac number, because 49397817 - 2⁸ = 49397561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49397807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16263 + ... + 19059.

Almost surely, 2^49397817 is an apocalyptic number.

It is an amenable number.

49397817 is a deficient number, since it is larger than the sum of its proper divisors (28588039).

49397817 is a wasteful number, since it uses less digits than its factorization.

49397817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865 (or 2836 counting only the distinct ones).

The product of its digits is 381024, while the sum is 48.

The square root of 49397817 is about 7028.3580586080. The cubic root of 49397817 is about 366.9181983017.

The spelling of 49397817 in words is "forty-nine million, three hundred ninety-seven thousand, eight hundred seventeen".