1428997 has 2 divisors, whose sum is σ = 1428998. Its totient is φ = 1428996.

The previous prime is 1428991. The next prime is 1429027. The reversal of 1428997 is 7998241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 829921 + 599076 = 911^2 + 774^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428997 - 2¹¹ = 1426949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714498 + 714499.

It is an arithmetic number, because the mean of its divisors is an integer number (714499).

2^1428997 is an apocalyptic number.

It is an amenable number.

1428997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428997 is an equidigital number, since it uses as much as digits as its factorization.

1428997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 1428997 is about 1195.4066253790. The cubic root of 1428997 is about 112.6359705755.

The spelling of 1428997 in words is "one million, four hundred twenty-eight thousand, nine hundred ninety-seven".