11400649 has 12 divisors (see below), whose sum is σ = 12576004. Its totient is φ = 10273824.

The previous prime is 11400643. The next prime is 11400661. The reversal of 11400649 is 94600411.

11400649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4473225 + 6927424 = 2115^2 + 2632^2 .

It is not a de Polignac number, because 11400649 - 2²³ = 3012041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11400643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28519 + ... + 28915.

Almost surely, 2^11400649 is an apocalyptic number.

It is an amenable number.

11400649 is a deficient number, since it is larger than the sum of its proper divisors (1175355).

11400649 is an equidigital number, since it uses as much as digits as its factorization.

11400649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 11400649 is about 3376.4847104644. The cubic root of 11400649 is about 225.0659822946.

The spelling of 11400649 in words is "eleven million, four hundred thousand, six hundred forty-nine".