1398772 has 12 divisors (see below), whose sum is σ = 2489760. Its totient is φ = 687416.

The previous prime is 1398769. The next prime is 1398773. The reversal of 1398772 is 2778931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398773) 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 3 ways as a sum of consecutive naturals, for example, 2728 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

2^1398772 is an apocalyptic number.

It is an amenable number.

1398772 is a deficient number, since it is larger than the sum of its proper divisors (1090988).

1398772 is a wasteful number, since it uses less digits than its factorization.

1398772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990 (or 5988 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 1398772 is about 1182.6969180648. The cubic root of 1398772 is about 111.8361763064.

It can be divided in two parts, 139 and 8772, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 1398772 in words is "one million, three hundred ninety-eight thousand, seven hundred seventy-two".