406919 has 4 divisors (see below), whose sum is σ = 409800. Its totient is φ = 404040.

The previous prime is 406907. The next prime is 406951. The reversal of 406919 is 919604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 406919 - 2¹² = 402823 is a prime.

It is a super-2 number, since 2×406919² = 331166145122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406891 and 406900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406969) 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, 1217 + ... + 1514.

It is an arithmetic number, because the mean of its divisors is an integer number (102450).

2⁴⁰⁶⁹¹⁹ is an apocalyptic number.

406919 is a deficient number, since it is larger than the sum of its proper divisors (2881).

406919 is a wasteful number, since it uses less digits than its factorization.

406919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 406919 is about 637.9020300955. The cubic root of 406919 is about 74.1030339758.

The spelling of 406919 in words is "four hundred six thousand, nine hundred nineteen".