400846397 has 8 divisors (see below), whose sum is σ = 458266752. Its totient is φ = 343465200.

The previous prime is 400846379. The next prime is 400846403. The reversal of 400846397 is 793648004.

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

It is a cyclic number.

It is not a de Polignac number, because 400846397 - 2⁸ = 400846141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400846307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17072 + ... + 33062.

It is an arithmetic number, because the mean of its divisors is an integer number (57283344).

Almost surely, 2^400846397 is an apocalyptic number.

It is an amenable number.

400846397 is a deficient number, since it is larger than the sum of its proper divisors (57420355).

400846397 is a wasteful number, since it uses less digits than its factorization.

400846397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19579.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 400846397 is about 20021.1487432665. The cubic root of 400846397 is about 737.3256258048.

It can be divided in two parts, 4008 and 46397, that added together give a palindrome (50405).

The spelling of 400846397 in words is "four hundred million, eight hundred forty-six thousand, three hundred ninety-seven".