1426399 has 8 divisors (see below), whose sum is σ = 1551312. Its totient is φ = 1303680.

The previous prime is 1426393. The next prime is 1426427. The reversal of 1426399 is 9936241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1426399 - 2⁵ = 1426367 is a prime.

It is a super-2 number, since 2×1426399² = 4069228214402, which contains 22 as substring.

It is a Duffinian number.

1426399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984 + ... + 1954.

It is an arithmetic number, because the mean of its divisors is an integer number (193914).

2^1426399 is an apocalyptic number.

1426399 is a deficient number, since it is larger than the sum of its proper divisors (124913).

1426399 is a wasteful number, since it uses less digits than its factorization.

1426399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097.

The product of its digits is 11664, while the sum is 34.

The square root of 1426399 is about 1194.3194714983. The cubic root of 1426399 is about 112.5676695762.

The spelling of 1426399 in words is "one million, four hundred twenty-six thousand, three hundred ninety-nine".