219880339397 has 8 divisors (see below), whose sum is σ = 225664280856. Its totient is φ = 214156963072.

The previous prime is 219880339373. The next prime is 219880339409. The reversal of 219880339397 is 793933088912.

It is a Cunningham number, because it is equal to 468914²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 21320088196 + 198560251201 = 146014^2 + 445601^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 219880339397 - 2¹⁸ = 219880077253 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 (219880339097) 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, 15133928 + ... + 15148449.

It is an arithmetic number, because the mean of its divisors is an integer number (28208035107).

Almost surely, 2^219880339397 is an apocalyptic number.

It is an amenable number.

219880339397 is a deficient number, since it is larger than the sum of its proper divisors (5783941459).

219880339397 is a wasteful number, since it uses less digits than its factorization.

219880339397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30282567.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The spelling of 219880339397 in words is "two hundred nineteen billion, eight hundred eighty million, three hundred thirty-nine thousand, three hundred ninety-seven".