11378977 has 2 divisors, whose sum is σ = 11378978. Its totient is φ = 11378976.

The previous prime is 11378959. The next prime is 11378989. The reversal of 11378977 is 77987311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8767521 + 2611456 = 2961^2 + 1616^2 .

It is a cyclic number.

It is not a de Polignac number, because 11378977 - 2⁷ = 11378849 is a prime.

It is a super-2 number, since 2×11378977² = 258962235133058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11378947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5689488 + 5689489.

It is an arithmetic number, because the mean of its divisors is an integer number (5689489).

Almost surely, 2^11378977 is an apocalyptic number.

It is an amenable number.

11378977 is a deficient number, since it is larger than the sum of its proper divisors (1).

11378977 is an equidigital number, since it uses as much as digits as its factorization.

11378977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 43.

The square root of 11378977 is about 3373.2739289895. The cubic root of 11378977 is about 224.9232791924.

The spelling of 11378977 in words is "eleven million, three hundred seventy-eight thousand, nine hundred seventy-seven".