390081734 has 8 divisors (see below), whose sum is σ = 668711568. Its totient is φ = 167177880.

The previous prime is 390081721. The next prime is 390081781. The reversal of 390081734 is 437180093.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 390081694 and 390081703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13931477 + ... + 13931504.

It is an arithmetic number, because the mean of its divisors is an integer number (83588946).

Almost surely, 2^390081734 is an apocalyptic number.

390081734 is a deficient number, since it is larger than the sum of its proper divisors (278629834).

390081734 is a wasteful number, since it uses less digits than its factorization.

390081734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27862990.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 390081734 is about 19750.4869307063. The cubic root of 390081734 is about 730.6653931864.

The spelling of 390081734 in words is "three hundred ninety million, eighty-one thousand, seven hundred thirty-four".