11940987 has 16 divisors (see below), whose sum is σ = 17746560. Its totient is φ = 7097472.

The previous prime is 11940977. The next prime is 11940997. The reversal of 11940987 is 78904911.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11940977) and next prime (11940997).

It is not a de Polignac number, because 11940987 - 2¹⁵ = 11908219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11940947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5193 + ... + 7130.

It is an arithmetic number, because the mean of its divisors is an integer number (1109160).

Almost surely, 2^11940987 is an apocalyptic number.

11940987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11940987 is a deficient number, since it is larger than the sum of its proper divisors (5805573).

11940987 is a wasteful number, since it uses less digits than its factorization.

11940987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12362.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 11940987 is about 3455.5733243559. The cubic root of 11940987 is about 228.5669370583.

The spelling of 11940987 in words is "eleven million, nine hundred forty thousand, nine hundred eighty-seven".