219790954039 has 4 divisors (see below), whose sum is σ = 221807384920. Its totient is φ = 217774523160.

The previous prime is 219790954037. The next prime is 219790954127. The reversal of 219790954039 is 930459097912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 219790954039 - 2¹ = 219790954037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219790954037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008215277 + ... + 1008215494.

It is an arithmetic number, because the mean of its divisors is an integer number (55451846230).

Almost surely, 2^219790954039 is an apocalyptic number.

219790954039 is a deficient number, since it is larger than the sum of its proper divisors (2016430881).

219790954039 is a wasteful number, since it uses less digits than its factorization.

219790954039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016430880.

The product of its (nonzero) digits is 5511240, while the sum is 58.

The spelling of 219790954039 in words is "two hundred nineteen billion, seven hundred ninety million, nine hundred fifty-four thousand, thirty-nine".