1399545 has 32 divisors (see below), whose sum is σ = 2845440. Its totient is φ = 639360.

The previous prime is 1399543. The next prime is 1399547. The reversal of 1399545 is 5459931.

It is an interprime number because it is at equal distance from previous prime (1399543) and next prime (1399547).

It is not a de Polignac number, because 1399545 - 2¹ = 1399543 is a prime.

It is a Curzon number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1399543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205 + ... + 1685.

It is an arithmetic number, because the mean of its divisors is an integer number (88920).

2^1399545 is an apocalyptic number.

1399545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1399545 is an abundant number, since it is smaller than the sum of its proper divisors (1445895).

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

1399545 is a wasteful number, since it uses less digits than its factorization.

1399545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502 (or 1496 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 1399545 is about 1183.0236684023. The cubic root of 1399545 is about 111.8567737648.

The spelling of 1399545 in words is "one million, three hundred ninety-nine thousand, five hundred forty-five".