11801977 has 8 divisors (see below), whose sum is σ = 12982752. Its totient is φ = 10727860.

The previous prime is 11801971. The next prime is 11801981. The reversal of 11801977 is 77910811.

11801977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11801977 - 2³ = 11801969 is a prime.

It is a super-2 number, since 2×11801977² = 278573322217058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11801971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3103 + ... + 5764.

It is an arithmetic number, because the mean of its divisors is an integer number (1622844).

Almost surely, 2^11801977 is an apocalyptic number.

It is an amenable number.

11801977 is a deficient number, since it is larger than the sum of its proper divisors (1180775).

11801977 is an frugal number, since it uses more digits than its factorization.

11801977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8900 (or 8878 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 34.

The square root of 11801977 is about 3435.4005588868. The cubic root of 11801977 is about 227.6765252313.

The spelling of 11801977 in words is "eleven million, eight hundred one thousand, nine hundred seventy-seven".