385209237 has 20 divisors (see below), whose sum is σ = 599189920. Its totient is φ = 220115448.

The previous prime is 385209217. The next prime is 385209259. The reversal of 385209237 is 732902583.

It is not a de Polignac number, because 385209237 - 2¹² = 385205141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385209195 and 385209204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385209217) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19537 + ... + 33942.

It is an arithmetic number, because the mean of its divisors is an integer number (29959496).

Almost surely, 2^385209237 is an apocalyptic number.

It is an amenable number.

385209237 is a deficient number, since it is larger than the sum of its proper divisors (213980683).

385209237 is an frugal number, since it uses more digits than its factorization.

385209237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53510 (or 53489 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 385209237 is about 19626.7479985860. The cubic root of 385209237 is about 727.6103992778.

The spelling of 385209237 in words is "three hundred eighty-five million, two hundred nine thousand, two hundred thirty-seven".