400140337 has 2 divisors, whose sum is σ = 400140338. Its totient is φ = 400140336.

The previous prime is 400140329. The next prime is 400140341. The reversal of 400140337 is 733041004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302446881 + 97693456 = 17391^2 + 9884^2 .

It is a cyclic number.

It is not a de Polignac number, because 400140337 - 2³ = 400140329 is a prime.

It is a super-2 number, since 2×400140337² = 320224578588947138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400140317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200070168 + 200070169.

It is an arithmetic number, because the mean of its divisors is an integer number (200070169).

Almost surely, 2^400140337 is an apocalyptic number.

It is an amenable number.

400140337 is a deficient number, since it is larger than the sum of its proper divisors (1).

400140337 is an equidigital number, since it uses as much as digits as its factorization.

400140337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 400140337 is about 20003.5081173278. The cubic root of 400140337 is about 736.8924573077.

The spelling of 400140337 in words is "four hundred million, one hundred forty thousand, three hundred thirty-seven".