386437890 has 32 divisors (see below), whose sum is σ = 929309760. Its totient is φ = 102843584.

The previous prime is 386437873. The next prime is 386437921. The reversal of 386437890 is 98734683.

386437890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2617 + ... + 27923.

It is an arithmetic number, because the mean of its divisors is an integer number (29040930).

Almost surely, 2^386437890 is an apocalyptic number.

386437890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

386437890 is an abundant number, since it is smaller than the sum of its proper divisors (542871870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

386437890 is a wasteful number, since it uses less digits than its factorization.

386437890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25826.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 386437890 is about 19658.0235527380. The cubic root of 386437890 is about 728.3831670990.

The spelling of 386437890 in words is "three hundred eighty-six million, four hundred thirty-seven thousand, eight hundred ninety".