400076744 has 8 divisors (see below), whose sum is σ = 750143910. Its totient is φ = 200038368.

The previous prime is 400076707. The next prime is 400076753. The reversal of 400076744 is 447670004.

It can be written as a sum of positive squares in only one way, i.e., 371024644 + 29052100 = 19262^2 + 5390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×400076744² = 320122802179283072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400076744.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25004789 + ... + 25004804.

Almost surely, 2^400076744 is an apocalyptic number.

It is an amenable number.

400076744 is a deficient number, since it is larger than the sum of its proper divisors (350067166).

400076744 is a wasteful number, since it uses less digits than its factorization.

400076744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50009599 (or 50009595 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 400076744 is about 20001.9185079832. The cubic root of 400076744 is about 736.8534179337.

The spelling of 400076744 in words is "four hundred million, seventy-six thousand, seven hundred forty-four".