201438099 has 24 divisors (see below), whose sum is σ = 298089792. Its totient is φ = 131022720.

The previous prime is 201438079. The next prime is 201438103. The reversal of 201438099 is 990834102.

It is not a de Polignac number, because 201438099 - 2⁵ = 201438067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201438059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194487 + ... + 195519.

It is an arithmetic number, because the mean of its divisors is an integer number (12420408).

Almost surely, 2^201438099 is an apocalyptic number.

201438099 is a deficient number, since it is larger than the sum of its proper divisors (96651693).

201438099 is a wasteful number, since it uses less digits than its factorization.

201438099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 201438099 is about 14192.8890293696. The cubic root of 201438099 is about 586.2018770803.

The spelling of 201438099 in words is "two hundred one million, four hundred thirty-eight thousand, ninety-nine".