400040374 has 16 divisors (see below), whose sum is σ = 620377056. Its totient is φ = 193320000.

The previous prime is 400040363. The next prime is 400040387. The reversal of 400040374 is 473040004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6727 + ... + 29074.

It is an arithmetic number, because the mean of its divisors is an integer number (38773566).

Almost surely, 2^400040374 is an apocalyptic number.

400040374 is a deficient number, since it is larger than the sum of its proper divisors (220336682).

400040374 is a wasteful number, since it uses less digits than its factorization.

400040374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35991.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 400040374 is about 20001.0093245316. The cubic root of 400040374 is about 736.8310887420.

Adding to 400040374 its reverse (473040004), we get a palindrome (873080378).

The spelling of 400040374 in words is "four hundred million, forty thousand, three hundred seventy-four".