49121897 has 16 divisors (see below), whose sum is σ = 57347520. Its totient is φ = 41601600.

The previous prime is 49121893. The next prime is 49121899. The reversal of 49121897 is 79812194.

It is a cyclic number.

It is not a de Polignac number, because 49121897 - 2² = 49121893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49121893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10823 + ... + 14675.

It is an arithmetic number, because the mean of its divisors is an integer number (3584220).

Almost surely, 2^49121897 is an apocalyptic number.

It is an amenable number.

49121897 is a deficient number, since it is larger than the sum of its proper divisors (8225623).

49121897 is a wasteful number, since it uses less digits than its factorization.

49121897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its digits is 36288, while the sum is 41.

The square root of 49121897 is about 7008.7015202532. The cubic root of 49121897 is about 366.2337608070.

The spelling of 49121897 in words is "forty-nine million, one hundred twenty-one thousand, eight hundred ninety-seven".