49169997 has 10 divisors (see below), whose sum is σ = 73451598. Its totient is φ = 32779944.

The previous prime is 49169983. The next prime is 49170049. The reversal of 49169997 is 79996194.

49169997 is a `hidden beast` number, since 491 + 69 + 9 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49154121 + 15876 = 7011^2 + 126^2 .

It is not a de Polignac number, because 49169997 - 2¹¹ = 49167949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49169927) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 303438 + ... + 303599.

Almost surely, 2^49169997 is an apocalyptic number.

It is an amenable number.

49169997 is a deficient number, since it is larger than the sum of its proper divisors (24281601).

49169997 is an equidigital number, since it uses as much as digits as its factorization.

49169997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607049 (or 607040 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 49169997 is about 7012.1321293883. The cubic root of 49169997 is about 366.3532601091.

The spelling of 49169997 in words is "forty-nine million, one hundred sixty-nine thousand, nine hundred ninety-seven".