39221998 has 8 divisors (see below), whose sum is σ = 60423192. Its totient is φ = 19080936.

The previous prime is 39221993. The next prime is 39222011. The reversal of 39221998 is 89912293.

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

It is a super-2 number, since 2×39221998² = 3076730254224008, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39221993) 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, 264940 + ... + 265087.

It is an arithmetic number, because the mean of its divisors is an integer number (7552899).

Almost surely, 2^39221998 is an apocalyptic number.

39221998 is a deficient number, since it is larger than the sum of its proper divisors (21201194).

39221998 is a wasteful number, since it uses less digits than its factorization.

39221998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530066.

The product of its digits is 69984, while the sum is 43.

The square root of 39221998 is about 6262.7468414427. The cubic root of 39221998 is about 339.7633820803.

The spelling of 39221998 in words is "thirty-nine million, two hundred twenty-one thousand, nine hundred ninety-eight".