400750038 has 48 divisors (see below), whose sum is σ = 964351440. Its totient is φ = 123304896.

The previous prime is 400750037. The next prime is 400750039. The reversal of 400750038 is 830057004.

It is an interprime number because it is at equal distance from previous prime (400750037) and next prime (400750039).

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

It is a junction number, because it is equal to n+sod(n) for n = 400749993 and 400750020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400750037) 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 23 ways as a sum of consecutive naturals, for example, 12831 + ... + 31082.

It is an arithmetic number, because the mean of its divisors is an integer number (20090655).

Almost surely, 2^400750038 is an apocalyptic number.

400750038 is an abundant number, since it is smaller than the sum of its proper divisors (563601402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400750038 is a wasteful number, since it uses less digits than its factorization.

400750038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43950 (or 43931 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 400750038 is about 20018.7421682782. The cubic root of 400750038 is about 737.2665394530.

It can be divided in two parts, 4007 and 50038, that added together give a palindrome (54045).

The spelling of 400750038 in words is "four hundred million, seven hundred fifty thousand, thirty-eight".