400046817 has 4 divisors (see below), whose sum is σ = 533395760. Its totient is φ = 266697876.

The previous prime is 400046813. The next prime is 400046831. The reversal of 400046817 is 718640004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400046817 - 2² = 400046813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400046813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66674467 + ... + 66674472.

It is an arithmetic number, because the mean of its divisors is an integer number (133348940).

Almost surely, 2^400046817 is an apocalyptic number.

It is an amenable number.

400046817 is a deficient number, since it is larger than the sum of its proper divisors (133348943).

400046817 is a wasteful number, since it uses less digits than its factorization.

400046817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133348942.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 400046817 is about 20001.1703907546. The cubic root of 400046817 is about 736.8350444904.

The spelling of 400046817 in words is "four hundred million, forty-six thousand, eight hundred seventeen".