390849207 has 8 divisors (see below), whose sum is σ = 595579776. Its totient is φ = 223342392.

The previous prime is 390849203. The next prime is 390849233. The reversal of 390849207 is 702948093.

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

It is not a de Polignac number, because 390849207 - 2² = 390849203 is a prime.

It is a super-2 number, since 2×390849207² = 305526205225057698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390849203) 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, 9305913 + ... + 9305954.

It is an arithmetic number, because the mean of its divisors is an integer number (74447472).

Almost surely, 2^390849207 is an apocalyptic number.

390849207 is a deficient number, since it is larger than the sum of its proper divisors (204730569).

390849207 is a wasteful number, since it uses less digits than its factorization.

390849207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18611877.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 390849207 is about 19769.9066006898. The cubic root of 390849207 is about 731.1442659892.

The spelling of 390849207 in words is "three hundred ninety million, eight hundred forty-nine thousand, two hundred seven".