1421933899 has 8 divisors (see below), whose sum is σ = 1487394720. Its totient is φ = 1356776256.

The previous prime is 1421933897. The next prime is 1421933921. The reversal of 1421933899 is 9983391241.

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

It is not a de Polignac number, because 1421933899 - 2¹ = 1421933897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421933897) 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, 66172 + ... + 84985.

It is an arithmetic number, because the mean of its divisors is an integer number (185924340).

Almost surely, 2^1421933899 is an apocalyptic number.

1421933899 is a deficient number, since it is larger than the sum of its proper divisors (65460821).

1421933899 is a wasteful number, since it uses less digits than its factorization.

1421933899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151589.

The product of its digits is 419904, while the sum is 49.

The square root of 1421933899 is about 37708.5388075433. The cubic root of 1421933899 is about 1124.5008878006.

The spelling of 1421933899 in words is "one billion, four hundred twenty-one million, nine hundred thirty-three thousand, eight hundred ninety-nine".