1399629 has 32 divisors (see below), whose sum is σ = 2386944. Its totient is φ = 708480.

The previous prime is 1399621. The next prime is 1399633. The reversal of 1399629 is 9269931.

It is a happy number.

It is not a de Polignac number, because 1399629 - 2³ = 1399621 is a prime.

It is a super-2 number, since 2×1399629² = 3917922675282, which contains 22 as substring.

It is a Curzon number.

1399629 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16822 + ... + 16904.

It is an arithmetic number, because the mean of its divisors is an integer number (74592).

2^1399629 is an apocalyptic number.

It is an amenable number.

1399629 is a deficient number, since it is larger than the sum of its proper divisors (987315).

1399629 is a wasteful number, since it uses less digits than its factorization.

1399629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177.

The product of its digits is 26244, while the sum is 39.

The square root of 1399629 is about 1183.0591701179. The cubic root of 1399629 is about 111.8590115828.

The spelling of 1399629 in words is "one million, three hundred ninety-nine thousand, six hundred twenty-nine".