1428699 has 4 divisors (see below), whose sum is σ = 1904936. Its totient is φ = 952464.

The previous prime is 1428689. The next prime is 1428703. The reversal of 1428699 is 9968241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9968241 = 3 ⋅3322747.

It is not a de Polignac number, because 1428699 - 2⁷ = 1428571 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428649) 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, 238114 + ... + 238119.

It is an arithmetic number, because the mean of its divisors is an integer number (476234).

2^1428699 is an apocalyptic number.

1428699 is a deficient number, since it is larger than the sum of its proper divisors (476237).

1428699 is an equidigital number, since it uses as much as digits as its factorization.

1428699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476236.

The product of its digits is 31104, while the sum is 39.

The square root of 1428699 is about 1195.2819751004. The cubic root of 1428699 is about 112.6281404091.

It can be divided in two parts, 142869 and 9, that multiplied together give a palindrome (1285821).

The spelling of 1428699 in words is "one million, four hundred twenty-eight thousand, six hundred ninety-nine".