221430039 has 8 divisors (see below), whose sum is σ = 308076672. Its totient is φ = 141201720.

The previous prime is 221430037. The next prime is 221430059. The reversal of 221430039 is 930034122.

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

It is not a de Polignac number, because 221430039 - 2¹ = 221430037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221430037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604497 + ... + 1604634.

It is an arithmetic number, because the mean of its divisors is an integer number (38509584).

Almost surely, 2^221430039 is an apocalyptic number.

221430039 is a deficient number, since it is larger than the sum of its proper divisors (86646633).

221430039 is a wasteful number, since it uses less digits than its factorization.

221430039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209157.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 221430039 is about 14880.5254947532. The cubic root of 221430039 is about 604.9862611000.

The spelling of 221430039 in words is "two hundred twenty-one million, four hundred thirty thousand, thirty-nine".