387506223 has 12 divisors (see below), whose sum is σ = 602787640. Its totient is φ = 238465296.

The previous prime is 387506219. The next prime is 387506269. The reversal of 387506223 is 322605783.

387506223 is a `hidden beast` number, since 387 + 50 + 6 + 223 = 666.

It is not a de Polignac number, because 387506223 - 2² = 387506219 is a prime.

It is a super-2 number, since 2×387506223² = 300322145727451458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387506213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1655893 + ... + 1656126.

Almost surely, 2^387506223 is an apocalyptic number.

387506223 is a deficient number, since it is larger than the sum of its proper divisors (215281417).

387506223 is a wasteful number, since it uses less digits than its factorization.

387506223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312038 (or 3312035 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 387506223 is about 19685.1777487530. The cubic root of 387506223 is about 729.0537705826.

It can be divided in two parts, 38750622 and 3, that added together give a square (38750625 = 6225²).

The spelling of 387506223 in words is "three hundred eighty-seven million, five hundred six thousand, two hundred twenty-three".