401112779 has 2 divisors, whose sum is σ = 401112780. Its totient is φ = 401112778.

The previous prime is 401112769. The next prime is 401112787. The reversal of 401112779 is 977211104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401112779 - 2¹² = 401108683 is a prime.

It is a super-2 number, since 2×401112779² = 321782922954205682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401112749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200556389 + 200556390.

It is an arithmetic number, because the mean of its divisors is an integer number (200556390).

Almost surely, 2^401112779 is an apocalyptic number.

401112779 is a deficient number, since it is larger than the sum of its proper divisors (1).

401112779 is an equidigital number, since it uses as much as digits as its factorization.

401112779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 401112779 is about 20027.8001537862. The cubic root of 401112779 is about 737.4889192628.

The spelling of 401112779 in words is "four hundred one million, one hundred twelve thousand, seven hundred seventy-nine".