1399355 has 16 divisors (see below), whose sum is σ = 1806624. Its totient is φ = 1036800.

The previous prime is 1399351. The next prime is 1399357. The reversal of 1399355 is 5539931.

It is not a de Polignac number, because 1399355 - 2² = 1399351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1399351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8504 + ... + 8666.

It is an arithmetic number, because the mean of its divisors is an integer number (112914).

2^1399355 is an apocalyptic number.

1399355 is a deficient number, since it is larger than the sum of its proper divisors (407269).

1399355 is a wasteful number, since it uses less digits than its factorization.

1399355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its digits is 18225, while the sum is 35.

The square root of 1399355 is about 1182.9433629722. The cubic root of 1399355 is about 111.8517117032.

The spelling of 1399355 in words is "one million, three hundred ninety-nine thousand, three hundred fifty-five".