49897905 has 16 divisors (see below), whose sum is σ = 80081664. Its totient is φ = 26530560.

The previous prime is 49897891. The next prime is 49897921. The reversal of 49897905 is 50979894.

It is a happy number.

It is not a de Polignac number, because 49897905 - 2⁴ = 49897889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120 + ... + 9990.

It is an arithmetic number, because the mean of its divisors is an integer number (5005104).

Almost surely, 2^49897905 is an apocalyptic number.

It is an amenable number.

49897905 is a deficient number, since it is larger than the sum of its proper divisors (30183759).

49897905 is a wasteful number, since it uses less digits than its factorization.

49897905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10216.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 49897905 is about 7063.8449161912. The cubic root of 49897905 is about 368.1522315392.

The spelling of 49897905 in words is "forty-nine million, eight hundred ninety-seven thousand, nine hundred five".