1995406 has 8 divisors (see below), whose sum is σ = 3420720. Its totient is φ = 855168.

The previous prime is 1995391. The next prime is 1995421. The reversal of 1995406 is 6045991.

It is an interprime number because it is at equal distance from previous prime (1995391) and next prime (1995421).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71251 + ... + 71278.

It is an arithmetic number, because the mean of its divisors is an integer number (427590).

2^1995406 is an apocalyptic number.

1995406 is a deficient number, since it is larger than the sum of its proper divisors (1425314).

1995406 is a wasteful number, since it uses less digits than its factorization.

1995406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142538.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1995406 is about 1412.5884043132. The cubic root of 1995406 is about 125.8955630777.

It can be divided in two parts, 1995 and 406, that added together give a 4-th power (2401 = 7⁴).

The spelling of 1995406 in words is "one million, nine hundred ninety-five thousand, four hundred six".