201988399 has 8 divisors (see below), whose sum is σ = 204068592. Its totient is φ = 199919040.

The previous prime is 201988387. The next prime is 201988417. The reversal of 201988399 is 993889102.

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 201988399 - 2¹⁹ = 201464111 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 (201988309) 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, 37804 + ... + 42814.

It is an arithmetic number, because the mean of its divisors is an integer number (25508574).

Almost surely, 2^201988399 is an apocalyptic number.

201988399 is a deficient number, since it is larger than the sum of its proper divisors (2080193).

201988399 is a wasteful number, since it uses less digits than its factorization.

201988399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 201988399 is about 14212.2622759362. The cubic root of 201988399 is about 586.7351982112.

The spelling of 201988399 in words is "two hundred one million, nine hundred eighty-eight thousand, three hundred ninety-nine".