1398249 has 8 divisors (see below), whose sum is σ = 2071520. Its totient is φ = 932148.

The previous prime is 1398247. The next prime is 1398251. The reversal of 1398249 is 9428931.

It is an interprime number because it is at equal distance from previous prime (1398247) and next prime (1398251).

It is not a de Polignac number, because 1398249 - 2¹ = 1398247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25867 + ... + 25920.

It is an arithmetic number, because the mean of its divisors is an integer number (258940).

2^1398249 is an apocalyptic number.

It is an amenable number.

1398249 is a deficient number, since it is larger than the sum of its proper divisors (673271).

1398249 is an equidigital number, since it uses as much as digits as its factorization.

1398249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51796 (or 51790 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1398249 is about 1182.4757925641. The cubic root of 1398249 is about 111.8222360760.

The spelling of 1398249 in words is "one million, three hundred ninety-eight thousand, two hundred forty-nine".