400137275 has 12 divisors (see below), whose sum is σ = 497247192. Its totient is φ = 319415040.

The previous prime is 400137271. The next prime is 400137293. The reversal of 400137275 is 572731004.

It is not a de Polignac number, because 400137275 - 2² = 400137271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400137271) 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, 5462 + ... + 28811.

It is an arithmetic number, because the mean of its divisors is an integer number (41437266).

Almost surely, 2^400137275 is an apocalyptic number.

400137275 is a deficient number, since it is larger than the sum of its proper divisors (97109917).

400137275 is a wasteful number, since it uses less digits than its factorization.

400137275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34750 (or 34745 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 400137275 is about 20003.4315806064. The cubic root of 400137275 is about 736.8905776584.

Adding to 400137275 its reverse (572731004), we get a palindrome (972868279).

The spelling of 400137275 in words is "four hundred million, one hundred thirty-seven thousand, two hundred seventy-five".