385738440 has 32 divisors (see below), whose sum is σ = 1157215680. Its totient is φ = 102863552.

The previous prime is 385738429. The next prime is 385738453. The reversal of 385738440 is 44837583.

It is a junction number, because it is equal to n+sod(n) for n = 385738392 and 385738401.

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, 1607124 + ... + 1607363.

It is an arithmetic number, because the mean of its divisors is an integer number (36162990).

Almost surely, 2^385738440 is an apocalyptic number.

385738440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385738440 is an abundant number, since it is smaller than the sum of its proper divisors (771477240).

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

385738440 is a wasteful number, since it uses less digits than its factorization.

385738440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214501 (or 3214497 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 385738440 is about 19640.2250496271. The cubic root of 385738440 is about 727.9434454718.

The spelling of 385738440 in words is "three hundred eighty-five million, seven hundred thirty-eight thousand, four hundred forty".