1390629 has 16 divisors (see below), whose sum is σ = 2017280. Its totient is φ = 848880.

The previous prime is 1390621. The next prime is 1390633. The reversal of 1390629 is 9260931.

It is not a de Polignac number, because 1390629 - 2³ = 1390621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1390596 and 1390605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390621) 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, 1374 + ... + 2160.

It is an arithmetic number, because the mean of its divisors is an integer number (126080).

2^1390629 is an apocalyptic number.

1390629 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1390629 is a deficient number, since it is larger than the sum of its proper divisors (626651).

1390629 is a wasteful number, since it uses less digits than its factorization.

1390629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1390629 is about 1179.2493375025. The cubic root of 1390629 is about 111.6187344096.

The spelling of 1390629 in words is "one million, three hundred ninety thousand, six hundred twenty-nine".