11379721 has 2 divisors, whose sum is σ = 11379722. Its totient is φ = 11379720.

The previous prime is 11379707. The next prime is 11379761. The reversal of 11379721 is 12797311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10169721 + 1210000 = 3189^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 11379721 - 2¹¹ = 11377673 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (11379701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5689860 + 5689861.

It is an arithmetic number, because the mean of its divisors is an integer number (5689861).

Almost surely, 2^11379721 is an apocalyptic number.

It is an amenable number.

11379721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11379721 is an equidigital number, since it uses as much as digits as its factorization.

11379721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646, while the sum is 31.

The square root of 11379721 is about 3373.3842058088. The cubic root of 11379721 is about 224.9281811935.

It can be divided in two parts, 11379 and 721, that added together give a square (12100 = 110²).

The spelling of 11379721 in words is "eleven million, three hundred seventy-nine thousand, seven hundred twenty-one".