385515944 has 32 divisors (see below), whose sum is σ = 794253600. Its totient is φ = 173968320.

The previous prime is 385515943. The next prime is 385515967. The reversal of 385515944 is 449515583.

It is a happy number.

It is a super-2 number, since 2×385515944² = 297245086156422272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 385515895 and 385515904.

It is not an unprimeable number, because it can be changed into a prime (385515943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3527 + ... + 27990.

It is an arithmetic number, because the mean of its divisors is an integer number (24820425).

Almost surely, 2^385515944 is an apocalyptic number.

It is an amenable number.

385515944 is an abundant number, since it is smaller than the sum of its proper divisors (408737656).

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

385515944 is a wasteful number, since it uses less digits than its factorization.

385515944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31673 (or 31669 counting only the distinct ones).

The product of its digits is 432000, while the sum is 44.

The square root of 385515944 is about 19634.5599390463. The cubic root of 385515944 is about 727.8034579927.

The spelling of 385515944 in words is "three hundred eighty-five million, five hundred fifteen thousand, nine hundred forty-four".