1390829 has 8 divisors (see below), whose sum is σ = 1526688. Its totient is φ = 1256560.

The previous prime is 1390813. The next prime is 1390841. The reversal of 1390829 is 9280931.

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 1390829 - 2⁴ = 1390813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1390795 and 1390804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2219 + ... + 2775.

It is an arithmetic number, because the mean of its divisors is an integer number (190836).

2^1390829 is an apocalyptic number.

It is an amenable number.

1390829 is a deficient number, since it is larger than the sum of its proper divisors (135859).

1390829 is a wasteful number, since it uses less digits than its factorization.

1390829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1390829 is about 1179.3341341622. The cubic root of 1390829 is about 111.6240851482.

The spelling of 1390829 in words is "one million, three hundred ninety thousand, eight hundred twenty-nine".