387873866 has 16 divisors (see below), whose sum is σ = 616109760. Its totient is φ = 182626560.

The previous prime is 387873841. The next prime is 387873883. The reversal of 387873866 is 668378783.

It is a super-2 number, since 2×387873866² = 300892271851571912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24215 + ... + 36906.

It is an arithmetic number, because the mean of its divisors is an integer number (38506860).

Almost surely, 2^387873866 is an apocalyptic number.

387873866 is a deficient number, since it is larger than the sum of its proper divisors (228235894).

387873866 is a wasteful number, since it uses less digits than its factorization.

387873866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61309.

The product of its digits is 8128512, while the sum is 56.

The square root of 387873866 is about 19694.5136015084. The cubic root of 387873866 is about 729.2842587486.

The spelling of 387873866 in words is "three hundred eighty-seven million, eight hundred seventy-three thousand, eight hundred sixty-six".