11387961 has 24 divisors (see below), whose sum is σ = 17873856. Its totient is φ = 6945120.

The previous prime is 11387953. The next prime is 11388017. The reversal of 11387961 is 16978311.

11387961 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11387961 - 2³ = 11387953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11387861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14956 + ... + 15698.

It is an arithmetic number, because the mean of its divisors is an integer number (744744).

Almost surely, 2^11387961 is an apocalyptic number.

It is an amenable number.

11387961 is a deficient number, since it is larger than the sum of its proper divisors (6485895).

11387961 is a wasteful number, since it uses less digits than its factorization.

11387961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 890 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 11387961 is about 3374.6053102548. The cubic root of 11387961 is about 224.9824578916.

The spelling of 11387961 in words is "eleven million, three hundred eighty-seven thousand, nine hundred sixty-one".