1421384993 has 12 divisors (see below), whose sum is σ = 1654615152. Its totient is φ = 1217469960.

The previous prime is 1421384969. The next prime is 1421385029. The reversal of 1421384993 is 3994831241.

It is not a de Polignac number, because 1421384993 - 2¹⁶ = 1421319457 is a prime.

It is a super-2 number, since 2×1421384993² = 4040670596651220098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421384903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65546 + ... + 84492.

It is an arithmetic number, because the mean of its divisors is an integer number (137884596).

Almost surely, 2^1421384993 is an apocalyptic number.

It is an amenable number.

1421384993 is a deficient number, since it is larger than the sum of its proper divisors (233230159).

1421384993 is a wasteful number, since it uses less digits than its factorization.

1421384993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20492 (or 20485 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 1421384993 is about 37701.2598330613. The cubic root of 1421384993 is about 1124.3561729803.

The spelling of 1421384993 in words is "one billion, four hundred twenty-one million, three hundred eighty-four thousand, nine hundred ninety-three".