1398513 has 4 divisors (see below), whose sum is σ = 1864688. Its totient is φ = 932340.

The previous prime is 1398497. The next prime is 1398517. The reversal of 1398513 is 3158931.

It is a happy number.

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 not a de Polignac number, because 1398513 - 2⁴ = 1398497 is a prime.

It is a super-2 number, since 2×1398513² = 3911677222338, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398517) 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, 233083 + ... + 233088.

It is an arithmetic number, because the mean of its divisors is an integer number (466172).

2^1398513 is an apocalyptic number.

It is an amenable number.

1398513 is a deficient number, since it is larger than the sum of its proper divisors (466175).

1398513 is an equidigital number, since it uses as much as digits as its factorization.

1398513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466174.

The product of its digits is 3240, while the sum is 30.

The square root of 1398513 is about 1182.5874174876. The cubic root of 1398513 is about 111.8292732615.

The spelling of 1398513 in words is "one million, three hundred ninety-eight thousand, five hundred thirteen".