400847493 has 8 divisors (see below), whose sum is σ = 534722656. Its totient is φ = 267102000.

The previous prime is 400847479. The next prime is 400847497. The reversal of 400847493 is 394748004.

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

It is not a de Polignac number, because 400847493 - 2⁴ = 400847477 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 (400847497) 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, 24958 + ... + 37743.

It is an arithmetic number, because the mean of its divisors is an integer number (66840332).

Almost surely, 2^400847493 is an apocalyptic number.

It is an amenable number.

400847493 is a deficient number, since it is larger than the sum of its proper divisors (133875163).

400847493 is a wasteful number, since it uses less digits than its factorization.

400847493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64835.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 400847493 is about 20021.1761143046. The cubic root of 400847493 is about 737.3262978063.

The spelling of 400847493 in words is "four hundred million, eight hundred forty-seven thousand, four hundred ninety-three".