49420402249 has 9 divisors (see below), whose sum is σ = 49829900551. Its totient is φ = 49014247360.

The previous prime is 49420402247. The next prime is 49420402259. The reversal of 49420402249 is 94220402494.

The square root of 49420402249 is 222307.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 47574153225 + 1846249024 = 218115^2 + 42968^2 .

It is not a de Polignac number, because 49420402249 - 2¹ = 49420402247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49420402247) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29121369 + ... + 29123065.

Almost surely, 2^49420402249 is an apocalyptic number.

49420402249 is the 222307-th square number.

49420402249 is the 111154-th centered octagonal number.

It is an amenable number.

49420402249 is a deficient number, since it is larger than the sum of its proper divisors (409498302).

49420402249 is an frugal number, since it uses more digits than its factorization.

49420402249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 49420402249 in words is "forty-nine billion, four hundred twenty million, four hundred two thousand, two hundred forty-nine".