400147137 has 12 divisors (see below), whose sum is σ = 622451284. Its totient is φ = 246244320.

The previous prime is 400147127. The next prime is 400147157. The reversal of 400147137 is 731741004.

It can be written as a sum of positive squares in 2 ways, for example, as 25492401 + 374654736 = 5049^2 + 19356^2 .

It is not a de Polignac number, because 400147137 - 2¹² = 400143041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400147137.

It is not an unprimeable number, because it can be changed into a prime (400147117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1709914 + ... + 1710147.

Almost surely, 2^400147137 is an apocalyptic number.

It is an amenable number.

400147137 is a deficient number, since it is larger than the sum of its proper divisors (222304147).

400147137 is a wasteful number, since it uses less digits than its factorization.

400147137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420080 (or 3420077 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 400147137 is about 20003.6780867919. The cubic root of 400147137 is about 736.8966315435.

The spelling of 400147137 in words is "four hundred million, one hundred forty-seven thousand, one hundred thirty-seven".