400343337 has 8 divisors (see below), whose sum is σ = 593101280. Its totient is φ = 266895540.

The previous prime is 400343327. The next prime is 400343341. The reversal of 400343337 is 733343004.

It is not a de Polignac number, because 400343337 - 2²⁰ = 399294761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14827531 = 400343337 / (4 + 0 + 0 + 3 + 4 + 3 + 3 + 3 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400343337.

It is not an unprimeable number, because it can be changed into a prime (400343327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7413739 + ... + 7413792.

It is an arithmetic number, because the mean of its divisors is an integer number (74137660).

Almost surely, 2^400343337 is an apocalyptic number.

It is an amenable number.

400343337 is a deficient number, since it is larger than the sum of its proper divisors (192757943).

400343337 is a wasteful number, since it uses less digits than its factorization.

400343337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14827540 (or 14827534 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 27.

The square root of 400343337 is about 20008.5815839104. The cubic root of 400343337 is about 737.0170501613.

The spelling of 400343337 in words is "four hundred million, three hundred forty-three thousand, three hundred thirty-seven".