219908039 has 12 divisors (see below), whose sum is σ = 252135936. Its totient is φ = 191048832.

The previous prime is 219908011. The next prime is 219908081. The reversal of 219908039 is 930809912.

It is a de Polignac number, because none of the positive numbers 2^k-219908039 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 219907987 and 219908005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219908009) 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, 35399 + ... + 41144.

It is an arithmetic number, because the mean of its divisors is an integer number (21011328).

Almost surely, 2^219908039 is an apocalyptic number.

219908039 is a deficient number, since it is larger than the sum of its proper divisors (32227897).

219908039 is a wasteful number, since it uses less digits than its factorization.

219908039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76586 (or 76573 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 219908039 is about 14829.2966454920. The cubic root of 219908039 is about 603.5969481461.

The spelling of 219908039 in words is "two hundred nineteen million, nine hundred eight thousand, thirty-nine".