385473739 has 6 divisors (see below), whose sum is σ = 448408284. Its totient is φ = 330406020.

The previous prime is 385473707. The next prime is 385473757. The reversal of 385473739 is 937374583.

It is not a de Polignac number, because 385473739 - 2⁵ = 385473707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 7866811 = 385473739 / (3 + 8 + 5 + 4 + 7 + 3 + 7 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385473692 and 385473701.

It is not an unprimeable number, because it can be changed into a prime (385473239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3933357 + ... + 3933454.

It is an arithmetic number, because the mean of its divisors is an integer number (74734714).

Almost surely, 2^385473739 is an apocalyptic number.

385473739 is a deficient number, since it is larger than the sum of its proper divisors (62934545).

385473739 is an equidigital number, since it uses as much as digits as its factorization.

385473739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7866825 (or 7866818 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 49.

The square root of 385473739 is about 19633.4851465551. The cubic root of 385473739 is about 727.7768978582.

The spelling of 385473739 in words is "three hundred eighty-five million, four hundred seventy-three thousand, seven hundred thirty-nine".