385772491 has 8 divisors (see below), whose sum is σ = 433510560. Its totient is φ = 340614912.

The previous prime is 385772477. The next prime is 385772501. The reversal of 385772491 is 194277583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 385772491 - 2¹⁵ = 385739723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385772411) 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, 644806 + ... + 645403.

It is an arithmetic number, because the mean of its divisors is an integer number (54188820).

Almost surely, 2^385772491 is an apocalyptic number.

385772491 is a deficient number, since it is larger than the sum of its proper divisors (47738069).

385772491 is a wasteful number, since it uses less digits than its factorization.

385772491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290245.

The product of its digits is 423360, while the sum is 46.

The square root of 385772491 is about 19641.0918993828. The cubic root of 385772491 is about 727.9648645392.

The spelling of 385772491 in words is "three hundred eighty-five million, seven hundred seventy-two thousand, four hundred ninety-one".