385478477 has 4 divisors (see below), whose sum is σ = 390122880. Its totient is φ = 380834076.

The previous prime is 385478473. The next prime is 385478501. The reversal of 385478477 is 774874583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 385478477 - 2² = 385478473 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 (385478473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322077 + ... + 2322242.

It is an arithmetic number, because the mean of its divisors is an integer number (97530720).

Almost surely, 2^385478477 is an apocalyptic number.

It is an amenable number.

385478477 is a deficient number, since it is larger than the sum of its proper divisors (4644403).

385478477 is an equidigital number, since it uses as much as digits as its factorization.

385478477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644402.

The product of its digits is 5268480, while the sum is 53.

The square root of 385478477 is about 19633.6058073906. The cubic root of 385478477 is about 727.7798796375.

The spelling of 385478477 in words is "three hundred eighty-five million, four hundred seventy-eight thousand, four hundred seventy-seven".