1398007 has 8 divisors (see below), whose sum is σ = 1554560. Its totient is φ = 1248480.

The previous prime is 1397999. The next prime is 1398011. The reversal of 1398007 is 7008931.

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

It is a cyclic number.

It is not a de Polignac number, because 1398007 - 2³ = 1397999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398017) 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 7 ways as a sum of consecutive naturals, for example, 1332 + ... + 2137.

It is an arithmetic number, because the mean of its divisors is an integer number (194320).

2^1398007 is an apocalyptic number.

1398007 is a deficient number, since it is larger than the sum of its proper divisors (156553).

1398007 is a wasteful number, since it uses less digits than its factorization.

1398007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1398007 is about 1182.3734604599. The cubic root of 1398007 is about 111.8157845445.

The spelling of 1398007 in words is "one million, three hundred ninety-eight thousand, seven".