1429391 has 4 divisors (see below), whose sum is σ = 1431792. Its totient is φ = 1426992.

The previous prime is 1429387. The next prime is 1429397. The reversal of 1429391 is 1939241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1939241 = 17 ⋅114073.

It is a cyclic number.

It is not a de Polignac number, because 1429391 - 2² = 1429387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429397) 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, 446 + ... + 1748.

It is an arithmetic number, because the mean of its divisors is an integer number (357948).

2^1429391 is an apocalyptic number.

1429391 is a deficient number, since it is larger than the sum of its proper divisors (2401).

1429391 is a wasteful number, since it uses less digits than its factorization.

1429391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400.

The product of its digits is 1944, while the sum is 29.

The square root of 1429391 is about 1195.5714115016. The cubic root of 1429391 is about 112.6463215406.

The spelling of 1429391 in words is "one million, four hundred twenty-nine thousand, three hundred ninety-one".