1396405 has 8 divisors (see below), whose sum is σ = 1764000. Its totient is φ = 1058256.

The previous prime is 1396393. The next prime is 1396411. The reversal of 1396405 is 5046931.

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 1396405 - 2¹⁷ = 1265333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7255 + ... + 7444.

It is an arithmetic number, because the mean of its divisors is an integer number (220500).

2^1396405 is an apocalyptic number.

It is an amenable number.

1396405 is a deficient number, since it is larger than the sum of its proper divisors (367595).

1396405 is a wasteful number, since it uses less digits than its factorization.

1396405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14723.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1396405 is about 1181.6958153434. The cubic root of 1396405 is about 111.7730576834.

The spelling of 1396405 in words is "one million, three hundred ninety-six thousand, four hundred five".