400112369 has 2 divisors, whose sum is σ = 400112370. Its totient is φ = 400112368.

The previous prime is 400112329. The next prime is 400112387. The reversal of 400112369 is 963211004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221622769 + 178489600 = 14887^2 + 13360^2 .

It is a cyclic number.

It is not a de Polignac number, because 400112369 - 2²⁸ = 131676913 is a prime.

It is a super-2 number, since 2×400112369² = 320179815653584322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (400112309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200056184 + 200056185.

It is an arithmetic number, because the mean of its divisors is an integer number (200056185).

Almost surely, 2^400112369 is an apocalyptic number.

It is an amenable number.

400112369 is a deficient number, since it is larger than the sum of its proper divisors (1).

400112369 is an equidigital number, since it uses as much as digits as its factorization.

400112369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 400112369 is about 20002.8090277341. The cubic root of 400112369 is about 736.8752884242.

The spelling of 400112369 in words is "four hundred million, one hundred twelve thousand, three hundred sixty-nine".