11916457 has 12 divisors (see below), whose sum is σ = 13959300. Its totient is φ = 10142496.

The previous prime is 11916449. The next prime is 11916481. The reversal of 11916457 is 75461911.

It can be written as a sum of positive squares in 2 ways, for example, as 3759721 + 8156736 = 1939^2 + 2856^2 .

It is not a de Polignac number, because 11916457 - 2³ = 11916449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11916557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6919 + ... + 8467.

It is an arithmetic number, because the mean of its divisors is an integer number (1163275).

Almost surely, 2^11916457 is an apocalyptic number.

It is an amenable number.

11916457 is a deficient number, since it is larger than the sum of its proper divisors (2042843).

11916457 is a wasteful number, since it uses less digits than its factorization.

11916457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720 (or 1713 counting only the distinct ones).

The product of its digits is 7560, while the sum is 34.

The square root of 11916457 is about 3452.0221609949. The cubic root of 11916457 is about 228.4103171014.

The spelling of 11916457 in words is "eleven million, nine hundred sixteen thousand, four hundred fifty-seven".