400946 has 16 divisors (see below), whose sum is σ = 740544. Its totient is φ = 158544.

The previous prime is 400943. The next prime is 400949. The reversal of 400946 is 649004.

It is an interprime number because it is at equal distance from previous prime (400943) and next prime (400949).

It is not an unprimeable number, because it can be changed into a prime (400943) 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, 920 + ... + 1283.

It is an arithmetic number, because the mean of its divisors is an integer number (46284).

2⁴⁰⁰⁹⁴⁶ is an apocalyptic number.

400946 is a deficient number, since it is larger than the sum of its proper divisors (339598).

400946 is a wasteful number, since it uses less digits than its factorization.

400946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 400946 is about 633.2029690392. The cubic root of 400946 is about 73.7386691392.

The spelling of 400946 in words is "four hundred thousand, nine hundred forty-six".