385478407 has 4 divisors (see below), whose sum is σ = 388292256. Its totient is φ = 382664560.

The previous prime is 385478341. The next prime is 385478449. The reversal of 385478407 is 704874583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 385478407 - 2⁷ = 385478279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385478207) 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 3 ways as a sum of consecutive naturals, for example, 1406719 + ... + 1406992.

It is an arithmetic number, because the mean of its divisors is an integer number (97073064).

Almost surely, 2^385478407 is an apocalyptic number.

385478407 is a deficient number, since it is larger than the sum of its proper divisors (2813849).

385478407 is a wasteful number, since it uses less digits than its factorization.

385478407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813848.

The product of its (nonzero) digits is 752640, while the sum is 46.

The square root of 385478407 is about 19633.6040247327. The cubic root of 385478407 is about 727.7798355844.

The spelling of 385478407 in words is "three hundred eighty-five million, four hundred seventy-eight thousand, four hundred seven".