1398607 has 24 divisors (see below), whose sum is σ = 1822176. Its totient is φ = 1064448.

The previous prime is 1398599. The next prime is 1398611. The reversal of 1398607 is 7068931.

It is not a de Polignac number, because 1398607 - 2³ = 1398599 is a prime.

It is a super-2 number, since 2×1398607² = 3912203080898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398667) 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 23 ways as a sum of consecutive naturals, for example, 19123 + ... + 19195.

It is an arithmetic number, because the mean of its divisors is an integer number (75924).

2^1398607 is an apocalyptic number.

1398607 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1398607 is a deficient number, since it is larger than the sum of its proper divisors (423569).

1398607 is a wasteful number, since it uses less digits than its factorization.

1398607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1398607 is about 1182.6271601819. The cubic root of 1398607 is about 111.8317787122.

The spelling of 1398607 in words is "one million, three hundred ninety-eight thousand, six hundred seven".