400343674 has 16 divisors (see below), whose sum is σ = 624903840. Its totient is φ = 192200400.

The previous prime is 400343651. The next prime is 400343683. The reversal of 400343674 is 476343004.

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 in 7 ways as a sum of consecutive naturals, for example, 34377 + ... + 44524.

It is an arithmetic number, because the mean of its divisors is an integer number (39056490).

Almost surely, 2^400343674 is an apocalyptic number.

400343674 is a deficient number, since it is larger than the sum of its proper divisors (224560166).

400343674 is a wasteful number, since it uses less digits than its factorization.

400343674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79005.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 400343674 is about 20008.5900052952. The cubic root of 400343674 is about 737.0172569627.

Adding to 400343674 its reverse (476343004), we get a palindrome (876686678).

The spelling of 400343674 in words is "four hundred million, three hundred forty-three thousand, six hundred seventy-four".