385477491 has 16 divisors (see below), whose sum is σ = 618310400. Its totient is φ = 208679328.

The previous prime is 385477471. The next prime is 385477501. The reversal of 385477491 is 194774583.

It is a happy number.

It is not a de Polignac number, because 385477491 - 2¹¹ = 385475443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 385477491.

It is not an unprimeable number, because it can be changed into a prime (385477471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482656 + ... + 483453.

It is an arithmetic number, because the mean of its divisors is an integer number (38644400).

Almost surely, 2^385477491 is an apocalyptic number.

385477491 is a deficient number, since it is larger than the sum of its proper divisors (232832909).

385477491 is a wasteful number, since it uses less digits than its factorization.

385477491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966138.

The product of its digits is 846720, while the sum is 48.

The square root of 385477491 is about 19633.5806973664. The cubic root of 385477491 is about 727.7792591173.

The spelling of 385477491 in words is "three hundred eighty-five million, four hundred seventy-seven thousand, four hundred ninety-one".