1402399 has 2 divisors, whose sum is σ = 1402400. Its totient is φ = 1402398.

The previous prime is 1402397. The next prime is 1402417. The reversal of 1402399 is 9932041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1402399 - 2¹ = 1402397 is a prime.

Together with 1402397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701199 + 701200.

It is an arithmetic number, because the mean of its divisors is an integer number (701200).

2^1402399 is an apocalyptic number.

1402399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402399 is an equidigital number, since it uses as much as digits as its factorization.

1402399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1402399 is about 1184.2292852315. The cubic root of 1402399 is about 111.9327561916.

The spelling of 1402399 in words is "one million, four hundred two thousand, three hundred ninety-nine".