406889 has 8 divisors (see below), whose sum is σ = 477888. Its totient is φ = 339120.

The previous prime is 406883. The next prime is 406907. The reversal of 406889 is 988604.

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

It is a cyclic number.

It is not a de Polignac number, because 406889 - 2⁴ = 406873 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406883) 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, 527 + ... + 1044.

It is an arithmetic number, because the mean of its divisors is an integer number (59736).

2⁴⁰⁶⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

406889 is a deficient number, since it is larger than the sum of its proper divisors (70999).

406889 is a wasteful number, since it uses less digits than its factorization.

406889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 406889 is about 637.8785150795. The cubic root of 406889 is about 74.1012128552.

The spelling of 406889 in words is "four hundred six thousand, eight hundred eighty-nine".