386723997 has 32 divisors (see below), whose sum is σ = 633605760. Its totient is φ = 231154560.

The previous prime is 386723989. The next prime is 386724031. The reversal of 386723997 is 799327683.

It is not a de Polignac number, because 386723997 - 2³ = 386723989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386723917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12763 + ... + 30599.

It is an arithmetic number, because the mean of its divisors is an integer number (19800180).

Almost surely, 2^386723997 is an apocalyptic number.

It is an amenable number.

386723997 is a deficient number, since it is larger than the sum of its proper divisors (246881763).

386723997 is a wasteful number, since it uses less digits than its factorization.

386723997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17930 (or 17924 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 386723997 is about 19665.2993112233. The cubic root of 386723997 is about 728.5628804237.

The spelling of 386723997 in words is "three hundred eighty-six million, seven hundred twenty-three thousand, nine hundred ninety-seven".