11977438 has 8 divisors (see below), whose sum is σ = 19599480. Its totient is φ = 5444280.

The previous prime is 11977423. The next prime is 11977447. The reversal of 11977438 is 83477911.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11977438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272193 + ... + 272236.

It is an arithmetic number, because the mean of its divisors is an integer number (2449935).

Almost surely, 2^11977438 is an apocalyptic number.

11977438 is a deficient number, since it is larger than the sum of its proper divisors (7622042).

11977438 is a wasteful number, since it uses less digits than its factorization.

11977438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544442.

The product of its digits is 42336, while the sum is 40.

The square root of 11977438 is about 3460.8435387922. The cubic root of 11977438 is about 228.7992749215.

The spelling of 11977438 in words is "eleven million, nine hundred seventy-seven thousand, four hundred thirty-eight".