400536117 has 16 divisors (see below), whose sum is σ = 602246080. Its totient is φ = 263037456.

The previous prime is 400536091. The next prime is 400536119. The reversal of 400536117 is 711635004.

400536117 is a `hidden beast` number, since 40 + 0 + 5 + 3 + 611 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-400536117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400536119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108898 + ... + 112515.

It is an arithmetic number, because the mean of its divisors is an integer number (37640380).

Almost surely, 2^400536117 is an apocalyptic number.

It is an amenable number.

400536117 is a deficient number, since it is larger than the sum of its proper divisors (201709963).

400536117 is a wasteful number, since it uses less digits than its factorization.

400536117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221489 (or 221483 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 400536117 is about 20013.3984370471. The cubic root of 400536117 is about 737.1353314248.

The spelling of 400536117 in words is "four hundred million, five hundred thirty-six thousand, one hundred seventeen".