11977808 has 10 divisors (see below), whose sum is σ = 23207034. Its totient is φ = 5988896.

The previous prime is 11977807. The next prime is 11977817. The reversal of 11977808 is 80877911.

It can be written as a sum of positive squares in only one way, i.e., 11916304 + 61504 = 3452^2 + 248^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11977807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374291 + ... + 374322.

Almost surely, 2^11977808 is an apocalyptic number.

It is an amenable number.

11977808 is a deficient number, since it is larger than the sum of its proper divisors (11229226).

11977808 is an equidigital number, since it uses as much as digits as its factorization.

11977808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748621 (or 748615 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 11977808 is about 3460.8969935553. The cubic root of 11977808 is about 228.8016308750.

The spelling of 11977808 in words is "eleven million, nine hundred seventy-seven thousand, eight hundred eight".