400243299 has 16 divisors (see below), whose sum is σ = 537600000. Its totient is φ = 264865536.

The previous prime is 400243289. The next prime is 400243331. The reversal of 400243299 is 992342004.

It is not a de Polignac number, because 400243299 - 2¹³ = 400235107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400243219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319827 + ... + 321075.

It is an arithmetic number, because the mean of its divisors is an integer number (33600000).

Almost surely, 2^400243299 is an apocalyptic number.

400243299 is a deficient number, since it is larger than the sum of its proper divisors (137356701).

400243299 is a wasteful number, since it uses less digits than its factorization.

400243299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 400243299 is about 20006.0815503686. The cubic root of 400243299 is about 736.9556563135.

The spelling of 400243299 in words is "four hundred million, two hundred forty-three thousand, two hundred ninety-nine".