202239997 has 8 divisors (see below), whose sum is σ = 213162840. Its totient is φ = 191580480.

The previous prime is 202239991. The next prime is 202240019. The reversal of 202239997 is 799932202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25190361 + 177049636 = 5019^2 + 13306^2 .

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 202239997 - 2¹¹ = 202237949 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 (202239991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64254 + ... + 67327.

It is an arithmetic number, because the mean of its divisors is an integer number (26645355).

Almost surely, 2^202239997 is an apocalyptic number.

It is an amenable number.

202239997 is a deficient number, since it is larger than the sum of its proper divisors (10922843).

202239997 is a wasteful number, since it uses less digits than its factorization.

202239997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131663.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 202239997 is about 14221.1109622280. The cubic root of 202239997 is about 586.9787107970.

The spelling of 202239997 in words is "two hundred two million, two hundred thirty-nine thousand, nine hundred ninety-seven".