1421337849 has 4 divisors (see below), whose sum is σ = 1895117136. Its totient is φ = 947558564.

The previous prime is 1421337847. The next prime is 1421337851. The reversal of 1421337849 is 9487331241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1421337847) and next prime (1421337851).

It is a cyclic number.

It is not a de Polignac number, because 1421337849 - 2¹ = 1421337847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421337849.

It is not an unprimeable number, because it can be changed into a prime (1421337847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236889639 + ... + 236889644.

It is an arithmetic number, because the mean of its divisors is an integer number (473779284).

Almost surely, 2^1421337849 is an apocalyptic number.

It is an amenable number.

1421337849 is a deficient number, since it is larger than the sum of its proper divisors (473779287).

1421337849 is an equidigital number, since it uses as much as digits as its factorization.

1421337849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473779286.

The product of its digits is 145152, while the sum is 42.

The square root of 1421337849 is about 37700.6345967810. The cubic root of 1421337849 is about 1124.3437420922.

The spelling of 1421337849 in words is "one billion, four hundred twenty-one million, three hundred thirty-seven thousand, eight hundred forty-nine".