400136763 has 8 divisors (see below), whose sum is σ = 574555408. Its totient is φ = 246237984.

The previous prime is 400136731. The next prime is 400136783. The reversal of 400136763 is 367631004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400136763 - 2⁵ = 400136731 is a prime.

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 400136763.

It is not an unprimeable number, because it can be changed into a prime (400136783) 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, 5129920 + ... + 5129997.

It is an arithmetic number, because the mean of its divisors is an integer number (71819426).

Almost surely, 2^400136763 is an apocalyptic number.

400136763 is a deficient number, since it is larger than the sum of its proper divisors (174418645).

400136763 is a wasteful number, since it uses less digits than its factorization.

400136763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10259933.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 400136763 is about 20003.4187827981. The cubic root of 400136763 is about 736.8902633595.

Adding to 400136763 its reverse (367631004), we get a palindrome (767767767).

The spelling of 400136763 in words is "four hundred million, one hundred thirty-six thousand, seven hundred sixty-three".