11902649 has 6 divisors (see below), whose sum is σ = 13083210. Its totient is φ = 10820480.

The previous prime is 11902643. The next prime is 11902651. The reversal of 11902649 is 94620911.

It can be written as a sum of positive squares in only one way, i.e., 11854249 + 48400 = 3443^2 + 220^2 .

It is not a de Polignac number, because 11902649 - 2⁴ = 11902633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11902643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49064 + ... + 49305.

It is an arithmetic number, because the mean of its divisors is an integer number (2180535).

Almost surely, 2^11902649 is an apocalyptic number.

It is an amenable number.

11902649 is a deficient number, since it is larger than the sum of its proper divisors (1180561).

11902649 is an equidigital number, since it uses as much as digits as its factorization.

11902649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98391 (or 98380 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 11902649 is about 3450.0215941353. The cubic root of 11902649 is about 228.3220607621.

The spelling of 11902649 in words is "eleven million, nine hundred two thousand, six hundred forty-nine".