1398147 has 12 divisors (see below), whose sum is σ = 1950984. Its totient is φ = 890560.

The previous prime is 1398139. The next prime is 1398151. The reversal of 1398147 is 7418931.

It is not a de Polignac number, because 1398147 - 2³ = 1398139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1398107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1147 + ... + 2027.

It is an arithmetic number, because the mean of its divisors is an integer number (162582).

2^1398147 is an apocalyptic number.

1398147 is a deficient number, since it is larger than the sum of its proper divisors (552837).

1398147 is an equidigital number, since it uses as much as digits as its factorization.

1398147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 907 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 1398147 is about 1182.4326619305. The cubic root of 1398147 is about 111.8195169262.

It can be divided in two parts, 13981 and 47, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 1398147 in words is "one million, three hundred ninety-eight thousand, one hundred forty-seven".