1399630 has 16 divisors (see below), whose sum is σ = 2558160. Its totient is φ = 551232.

The previous prime is 1399621. The next prime is 1399633. The reversal of 1399630 is 369931.

It is an Ulam number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1399592 and 1399601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399633) 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, 375 + ... + 1714.

It is an arithmetic number, because the mean of its divisors is an integer number (159885).

2^1399630 is an apocalyptic number.

1399630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1399630 is a deficient number, since it is larger than the sum of its proper divisors (1158530).

1399630 is a wasteful number, since it uses less digits than its factorization.

1399630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 1399630 is about 1183.0595927509. The cubic root of 1399630 is about 111.8590382230.

The spelling of 1399630 in words is "one million, three hundred ninety-nine thousand, six hundred thirty".