11739381 has 4 divisors (see below), whose sum is σ = 15652512. Its totient is φ = 7826252.

The previous prime is 11739379. The next prime is 11739383. The reversal of 11739381 is 18393711.

11739381 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (11739379) and next prime (11739383).

It is a cyclic number.

It is not a de Polignac number, because 11739381 - 2¹ = 11739379 is a prime.

It is a super-2 number, since 2×11739381² = 275626132526322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11739383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956561 + ... + 1956566.

It is an arithmetic number, because the mean of its divisors is an integer number (3913128).

Almost surely, 2^11739381 is an apocalyptic number.

It is an amenable number.

11739381 is a deficient number, since it is larger than the sum of its proper divisors (3913131).

11739381 is an equidigital number, since it uses as much as digits as its factorization.

11739381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913130.

The product of its digits is 4536, while the sum is 33.

The square root of 11739381 is about 3426.2780097359. The cubic root of 11739381 is about 227.2732902338.

The spelling of 11739381 in words is "eleven million, seven hundred thirty-nine thousand, three hundred eighty-one".