11979497 has 2 divisors, whose sum is σ = 11979498. Its totient is φ = 11979496.

The previous prime is 11979491. The next prime is 11979511. The reversal of 11979497 is 79497911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11162281 + 817216 = 3341^2 + 904^2 .

It is an emirp because it is prime and its reverse (79497911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11979497 - 2⁶ = 11979433 is a prime.

It is not a weakly prime, because it can be changed into another prime (11979491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5989748 + 5989749.

It is an arithmetic number, because the mean of its divisors is an integer number (5989749).

Almost surely, 2^11979497 is an apocalyptic number.

It is an amenable number.

11979497 is a deficient number, since it is larger than the sum of its proper divisors (1).

11979497 is an equidigital number, since it uses as much as digits as its factorization.

11979497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 47.

The square root of 11979497 is about 3461.1409968390. The cubic root of 11979497 is about 228.8123848680.

The spelling of 11979497 in words is "eleven million, nine hundred seventy-nine thousand, four hundred ninety-seven".