21411429939 has 12 divisors (see below), whose sum is σ = 30936633000. Its totient is φ = 14270127264.

The previous prime is 21411429889. The next prime is 21411429979. The reversal of 21411429939 is 93992411412.

21411429939 is a `hidden beast` number, since 214 + 1 + 1 + 429 + 9 + 3 + 9 = 666.

It is not a de Polignac number, because 21411429939 - 2⁹ = 21411429427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21411429894 and 21411429903.

It is not an unprimeable number, because it can be changed into a prime (21411429979) 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, 313849 + ... + 375930.

It is an arithmetic number, because the mean of its divisors is an integer number (2578052750).

Almost surely, 2^21411429939 is an apocalyptic number.

21411429939 is a deficient number, since it is larger than the sum of its proper divisors (9525203061).

21411429939 is a wasteful number, since it uses less digits than its factorization.

21411429939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693234 (or 693231 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The spelling of 21411429939 in words is "twenty-one billion, four hundred eleven million, four hundred twenty-nine thousand, nine hundred thirty-nine".