386449140 has 192 divisors, whose sum is σ = 1358622720. Its totient is φ = 79733760.

The previous prime is 386449123. The next prime is 386449159. The reversal of 386449140 is 41944683.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1076281 + ... + 1076639.

It is an arithmetic number, because the mean of its divisors is an integer number (7076160).

Almost surely, 2^386449140 is an apocalyptic number.

386449140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386449140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679311360).

386449140 is an abundant number, since it is smaller than the sum of its proper divisors (972173580).

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

386449140 is a wasteful number, since it uses less digits than its factorization.

386449140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 386449140 is about 19658.3096933587. The cubic root of 386449140 is about 728.3902352733.

The spelling of 386449140 in words is "three hundred eighty-six million, four hundred forty-nine thousand, one hundred forty".