1399501 has 4 divisors (see below), whose sum is σ = 1401952. Its totient is φ = 1397052.

The previous prime is 1399499. The next prime is 1399507. The reversal of 1399501 is 1059931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1399501 - 2¹ = 1399499 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1399501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399507) 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, 136 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (350488).

2^1399501 is an apocalyptic number.

It is an amenable number.

1399501 is a deficient number, since it is larger than the sum of its proper divisors (2451).

1399501 is an equidigital number, since it uses as much as digits as its factorization.

1399501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1399501 is about 1183.0050718404. The cubic root of 1399501 is about 111.8556015387.

The spelling of 1399501 in words is "one million, three hundred ninety-nine thousand, five hundred one".