400641794 has 8 divisors (see below), whose sum is σ = 686814528. Its totient is φ = 171703620.

The previous prime is 400641767. The next prime is 400641803. The reversal of 400641794 is 497146004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14308622 + ... + 14308649.

It is an arithmetic number, because the mean of its divisors is an integer number (85851816).

Almost surely, 2^400641794 is an apocalyptic number.

400641794 is a deficient number, since it is larger than the sum of its proper divisors (286172734).

400641794 is a wasteful number, since it uses less digits than its factorization.

400641794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28617280.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 400641794 is about 20016.0384192277. The cubic root of 400641794 is about 737.2001540439.

Adding to 400641794 its reverse (497146004), we get a palindrome (897787798).

The spelling of 400641794 in words is "four hundred million, six hundred forty-one thousand, seven hundred ninety-four".