940406 has 12 divisors (see below), whose sum is σ = 1499388. Its totient is φ = 442272.

The previous prime is 940403. The next prime is 940421. The reversal of 940406 is 604049.

It is a super-3 number, since 3×940406³ = 2494982069113330248, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940403) 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, 236 + ... + 1391.

It is an arithmetic number, because the mean of its divisors is an integer number (124949).

2⁹⁴⁰⁴⁰⁶ is an apocalyptic number.

940406 is a deficient number, since it is larger than the sum of its proper divisors (558982).

940406 is a wasteful number, since it uses less digits than its factorization.

940406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1646 counting only the distinct ones).

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

The square root of 940406 is about 969.7453273927. The cubic root of 940406 is about 97.9727121026.

The spelling of 940406 in words is "nine hundred forty thousand, four hundred six".