49902649 has 4 divisors (see below), whose sum is σ = 51623460. Its totient is φ = 48181840.

The previous prime is 49902647. The next prime is 49902679. The reversal of 49902649 is 94620994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27878400 + 22024249 = 5280^2 + 4693^2 .

It is a cyclic number.

It is not a de Polignac number, because 49902649 - 2¹ = 49902647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49902647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860362 + ... + 860419.

It is an arithmetic number, because the mean of its divisors is an integer number (12905865).

Almost surely, 2^49902649 is an apocalyptic number.

It is an amenable number.

49902649 is a deficient number, since it is larger than the sum of its proper divisors (1720811).

49902649 is a wasteful number, since it uses less digits than its factorization.

49902649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720810.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 49902649 is about 7064.1807026718. The cubic root of 49902649 is about 368.1638984207.

The spelling of 49902649 in words is "forty-nine million, nine hundred two thousand, six hundred forty-nine".