400264049 has 2 divisors, whose sum is σ = 400264050. Its totient is φ = 400264048.

The previous prime is 400264043. The next prime is 400264091. The reversal of 400264049 is 940462004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314423824 + 85840225 = 17732^2 + 9265^2 .

It is a cyclic number.

It is not a de Polignac number, because 400264049 - 2²⁰ = 399215473 is a prime.

It is a super-2 number, since 2×400264049² = 320422617843748802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400264043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200132024 + 200132025.

It is an arithmetic number, because the mean of its divisors is an integer number (200132025).

Almost surely, 2^400264049 is an apocalyptic number.

It is an amenable number.

400264049 is a deficient number, since it is larger than the sum of its proper divisors (1).

400264049 is an equidigital number, since it uses as much as digits as its factorization.

400264049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 400264049 is about 20006.6001359551. The cubic root of 400264049 is about 736.9683915387.

The spelling of 400264049 in words is "four hundred million, two hundred sixty-four thousand, forty-nine".