390700000 has 72 divisors (see below), whose sum is σ = 961672824. Its totient is φ = 156240000.

The previous prime is 390699989. The next prime is 390700003. The reversal of 390700000 is 7093.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390700003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98047 + ... + 101953.

It is an arithmetic number, because the mean of its divisors is an integer number (13356567).

Almost surely, 2^390700000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390700000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480836412).

390700000 is an abundant number, since it is smaller than the sum of its proper divisors (570972824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390700000 is an frugal number, since it uses more digits than its factorization.

390700000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942 (or 3914 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 390700000 is about 19766.1326515836. The cubic root of 390700000 is about 731.0512158432.

Adding to 390700000 its reverse (7093), we get a palindrome (390707093).

The spelling of 390700000 in words is "three hundred ninety million, seven hundred thousand".