385133497 has 4 divisors (see below), whose sum is σ = 440152576. Its totient is φ = 330114420.

The previous prime is 385133479. The next prime is 385133501. The reversal of 385133497 is 794331583.

It is a happy number.

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 385133497 - 2¹¹ = 385131449 is a prime.

It is a super-2 number, since 2×385133497² = 296655621022898018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385133417) 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, 27509529 + ... + 27509542.

It is an arithmetic number, because the mean of its divisors is an integer number (110038144).

Almost surely, 2^385133497 is an apocalyptic number.

It is an amenable number.

385133497 is a deficient number, since it is larger than the sum of its proper divisors (55019079).

385133497 is an equidigital number, since it uses as much as digits as its factorization.

385133497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55019078.

The product of its digits is 272160, while the sum is 43.

The square root of 385133497 is about 19624.8183940642. The cubic root of 385133497 is about 727.5627084658.

The spelling of 385133497 in words is "three hundred eighty-five million, one hundred thirty-three thousand, four hundred ninety-seven".