201964397 has 8 divisors (see below), whose sum is σ = 206693856. Its totient is φ = 197269072.

The previous prime is 201964339. The next prime is 201964429. The reversal of 201964397 is 793469102.

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 201964397 - 2¹⁴ = 201948013 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 (201964307) 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, 3638 + ... + 20424.

It is an arithmetic number, because the mean of its divisors is an integer number (25836732).

Almost surely, 2^201964397 is an apocalyptic number.

It is an amenable number.

201964397 is a deficient number, since it is larger than the sum of its proper divisors (4729459).

201964397 is a wasteful number, since it uses less digits than its factorization.

201964397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17067.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 201964397 is about 14211.4178391883. The cubic root of 201964397 is about 586.7119569819.

The spelling of 201964397 in words is "two hundred one million, nine hundred sixty-four thousand, three hundred ninety-seven".