11408981 has 8 divisors (see below), whose sum is σ = 11575200. Its totient is φ = 11244240.

The previous prime is 11408953. The next prime is 11408983. The reversal of 11408981 is 18980411.

11408981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11408981 is a prime.

It is a super-2 number, since 2×11408981² = 260329694916722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11408983) 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, 29135 + ... + 29523.

It is an arithmetic number, because the mean of its divisors is an integer number (1446900).

Almost surely, 2^11408981 is an apocalyptic number.

It is an amenable number.

11408981 is a deficient number, since it is larger than the sum of its proper divisors (166219).

11408981 is a wasteful number, since it uses less digits than its factorization.

11408981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 11408981 is about 3377.7183127076. The cubic root of 11408981 is about 225.1207976861.

The spelling of 11408981 in words is "eleven million, four hundred eight thousand, nine hundred eighty-one".