385977211 has 4 divisors (see below), whose sum is σ = 399286800. Its totient is φ = 372667624.

The previous prime is 385977209. The next prime is 385977223. The reversal of 385977211 is 112779583.

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 385977211 - 2¹ = 385977209 is a prime.

It is a super-2 number, since 2×385977211² = 297956814822677042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385977271) 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, 6654751 + ... + 6654808.

It is an arithmetic number, because the mean of its divisors is an integer number (99821700).

Almost surely, 2^385977211 is an apocalyptic number.

385977211 is a deficient number, since it is larger than the sum of its proper divisors (13309589).

385977211 is a wasteful number, since it uses less digits than its factorization.

385977211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13309588.

The product of its digits is 105840, while the sum is 43.

The square root of 385977211 is about 19646.3027310484. The cubic root of 385977211 is about 728.0936128009.

The spelling of 385977211 in words is "three hundred eighty-five million, nine hundred seventy-seven thousand, two hundred eleven".