1398370 has 8 divisors (see below), whose sum is σ = 2517084. Its totient is φ = 559344.

The previous prime is 1398367. The next prime is 1398401. The reversal of 1398370 is 738931.

It can be written as a sum of positive squares in 2 ways, for example, as 1361889 + 36481 = 1167^2 + 191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69909 + ... + 69928.

2^1398370 is an apocalyptic number.

1398370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398370 is a deficient number, since it is larger than the sum of its proper divisors (1118714).

1398370 is a wasteful number, since it uses less digits than its factorization.

1398370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139844.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1398370 is about 1182.5269552953. The cubic root of 1398370 is about 111.8254615626.

The spelling of 1398370 in words is "one million, three hundred ninety-eight thousand, three hundred seventy".