1399930 has 24 divisors (see below), whose sum is σ = 2932308. Its totient is φ = 479808.

The previous prime is 1399919. The next prime is 1399943. The reversal of 1399930 is 399931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1399489 + 441 = 1183^2 + 21^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 939 + ... + 1918.

2^1399930 is an apocalyptic number.

1399930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1399930 is an abundant number, since it is smaller than the sum of its proper divisors (1532378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1399930 is a wasteful number, since it uses less digits than its factorization.

1399930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 1399930 is about 1183.1863758512. The cubic root of 1399930 is about 111.8670296955.

Subtracting from 1399930 its reverse (399931), we obtain a palindrome (999999).

The spelling of 1399930 in words is "one million, three hundred ninety-nine thousand, nine hundred thirty".