207980389 has 4 divisors (see below), whose sum is σ = 208209600. Its totient is φ = 207751180.

The previous prime is 207980359. The next prime is 207980401. The reversal of 207980389 is 983089702.

207980389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 207980389 - 2¹³ = 207972197 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 (207980359) 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, 113239 + ... + 115060.

It is an arithmetic number, because the mean of its divisors is an integer number (52052400).

Almost surely, 2^207980389 is an apocalyptic number.

It is an amenable number.

207980389 is a deficient number, since it is larger than the sum of its proper divisors (229211).

207980389 is an equidigital number, since it uses as much as digits as its factorization.

207980389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229210.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 207980389 is about 14421.5251967328. The cubic root of 207980389 is about 592.4805920993.

The spelling of 207980389 in words is "two hundred seven million, nine hundred eighty thousand, three hundred eighty-nine".