21430984829 has 8 divisors (see below), whose sum is σ = 21987097920. Its totient is φ = 20881301056.

The previous prime is 21430984807. The next prime is 21430984843. The reversal of 21430984829 is 92848903412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21430984829 is a prime.

It is a super-2 number, since 2×21430984829² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21430984879) 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, 1600577 + ... + 1613910.

It is an arithmetic number, because the mean of its divisors is an integer number (2748387240).

Almost surely, 2^21430984829 is an apocalyptic number.

It is an amenable number.

21430984829 is a deficient number, since it is larger than the sum of its proper divisors (556113091).

21430984829 is a wasteful number, since it uses less digits than its factorization.

21430984829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214659.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 21430984829 in words is "twenty-one billion, four hundred thirty million, nine hundred eighty-four thousand, eight hundred twenty-nine".