1429891 has 4 divisors (see below), whose sum is σ = 1434472. Its totient is φ = 1425312.

The previous prime is 1429889. The next prime is 1429907. The reversal of 1429891 is 1989241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1429891 - 2¹ = 1429889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1429801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785 + ... + 2458.

It is an arithmetic number, because the mean of its divisors is an integer number (358618).

2^1429891 is an apocalyptic number.

1429891 is a deficient number, since it is larger than the sum of its proper divisors (4581).

1429891 is an equidigital number, since it uses as much as digits as its factorization.

1429891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580.

The product of its digits is 5184, while the sum is 34.

The square root of 1429891 is about 1195.7804982521. The cubic root of 1429891 is about 112.6594545450.

The spelling of 1429891 in words is "one million, four hundred twenty-nine thousand, eight hundred ninety-one".