400930 has 8 divisors (see below), whose sum is σ = 721692. Its totient is φ = 160368.

The previous prime is 400927. The next prime is 400931. The reversal of 400930 is 39004.

It can be written as a sum of positive squares in 2 ways, for example, as 356409 + 44521 = 597^2 + 211^2 .

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

It is not an unprimeable number, because it can be changed into a prime (400931) 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, 20037 + ... + 20056.

2⁴⁰⁰⁹³⁰ is an apocalyptic number.

400930 is a deficient number, since it is larger than the sum of its proper divisors (320762).

400930 is a wasteful number, since it uses less digits than its factorization.

400930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40100.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 400930 is about 633.1903347336. The cubic root of 400930 is about 73.7376882637.

Adding to 400930 its reverse (39004), we get a palindrome (439934).

The spelling of 400930 in words is "four hundred thousand, nine hundred thirty".