1399436 has 12 divisors (see below), whose sum is σ = 2477160. Its totient is φ = 691680.

The previous prime is 1399427. The next prime is 1399439. The reversal of 1399436 is 6349931.

It is a super-2 number, since 2×1399436² = 3916842236192, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1399396 and 1399405.

It is not an unprimeable number, because it can be changed into a prime (1399439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1610 + ... + 2321.

It is an arithmetic number, because the mean of its divisors is an integer number (206430).

2^1399436 is an apocalyptic number.

It is an amenable number.

1399436 is a deficient number, since it is larger than the sum of its proper divisors (1077724).

1399436 is a wasteful number, since it uses less digits than its factorization.

1399436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024 (or 4022 counting only the distinct ones).

The product of its digits is 17496, while the sum is 35.

The square root of 1399436 is about 1182.9775991117. The cubic root of 1399436 is about 111.8538697960.

The spelling of 1399436 in words is "one million, three hundred ninety-nine thousand, four hundred thirty-six".