1421339659 has 4 divisors (see below), whose sum is σ = 1421627760. Its totient is φ = 1421051560.

The previous prime is 1421339657. The next prime is 1421339663. The reversal of 1421339659 is 9569331241.

It is a happy number.

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 1421339659 - 2¹ = 1421339657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421339653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136519 + ... + 146560.

It is an arithmetic number, because the mean of its divisors is an integer number (355406940).

Almost surely, 2^1421339659 is an apocalyptic number.

1421339659 is a deficient number, since it is larger than the sum of its proper divisors (288101).

1421339659 is an equidigital number, since it uses as much as digits as its factorization.

1421339659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288100.

The product of its digits is 174960, while the sum is 43.

The square root of 1421339659 is about 37700.6586016743. The cubic root of 1421339659 is about 1124.3442193565.

The spelling of 1421339659 in words is "one billion, four hundred twenty-one million, three hundred thirty-nine thousand, six hundred fifty-nine".