40201999 has 8 divisors (see below), whose sum is σ = 42023520. Its totient is φ = 38386656.

The previous prime is 40201981. The next prime is 40202003. The reversal of 40201999 is 99910204.

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 40201999 - 2⁹ = 40201487 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 (40201919) 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, 16257 + ... + 18565.

It is an arithmetic number, because the mean of its divisors is an integer number (5252940).

Almost surely, 2^40201999 is an apocalyptic number.

40201999 is a deficient number, since it is larger than the sum of its proper divisors (1821521).

40201999 is a wasteful number, since it uses less digits than its factorization.

40201999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 40201999 is about 6340.5046329137. The cubic root of 40201999 is about 342.5699120253.

The spelling of 40201999 in words is "forty million, two hundred one thousand, nine hundred ninety-nine".