406994 has 12 divisors (see below), whose sum is σ = 710334. Its totient is φ = 174384.

The previous prime is 406993. The next prime is 407023. The reversal of 406994 is 499604.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 405769 + 1225 = 637^2 + 35^2 .

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 406994.

It is not an unprimeable number, because it can be changed into a prime (406993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1979 + ... + 2174.

2⁴⁰⁶⁹⁹⁴ is an apocalyptic number.

406994 is a deficient number, since it is larger than the sum of its proper divisors (303340).

406994 is a wasteful number, since it uses less digits than its factorization.

406994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169 (or 4162 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 406994 is about 637.9608138436. The cubic root of 406994 is about 74.1075863856.

The spelling of 406994 in words is "four hundred six thousand, nine hundred ninety-four".