1424399 has 2 divisors, whose sum is σ = 1424400. Its totient is φ = 1424398.

The previous prime is 1424369. The next prime is 1424407. The reversal of 1424399 is 9934241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1424399 - 2¹² = 1420303 is a prime.

It is a super-2 number, since 2×1424399² = 4057825022402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1424359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712199 + 712200.

It is an arithmetic number, because the mean of its divisors is an integer number (712200).

2^1424399 is an apocalyptic number.

1424399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1424399 is an equidigital number, since it uses as much as digits as its factorization.

1424399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 1424399 is about 1193.4818808847. The cubic root of 1424399 is about 112.5150333819.

The spelling of 1424399 in words is "one million, four hundred twenty-four thousand, three hundred ninety-nine".