387372217 has 8 divisors (see below), whose sum is σ = 410400000. Its totient is φ = 364371264.

The previous prime is 387372211. The next prime is 387372239. The reversal of 387372217 is 712273783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387372217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 387372217.

It is not an unprimeable number, because it can be changed into a prime (387372211) 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, 28284 + ... + 39682.

It is an arithmetic number, because the mean of its divisors is an integer number (51300000).

Almost surely, 2^387372217 is an apocalyptic number.

It is an amenable number.

387372217 is a deficient number, since it is larger than the sum of its proper divisors (23027783).

387372217 is a wasteful number, since it uses less digits than its factorization.

387372217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13415.

The product of its digits is 98784, while the sum is 40.

The square root of 387372217 is about 19681.7737259628. The cubic root of 387372217 is about 728.9697213143.

The spelling of 387372217 in words is "three hundred eighty-seven million, three hundred seventy-two thousand, two hundred seventeen".