390040487 has 8 divisors (see below), whose sum is σ = 403067280. Its totient is φ = 377193600.

The previous prime is 390040471. The next prime is 390040513. The reversal of 390040487 is 784040093.

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

It is a cyclic number.

It is not a de Polignac number, because 390040487 - 2⁴ = 390040471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390040457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40562 + ... + 49247.

It is an arithmetic number, because the mean of its divisors is an integer number (50383410).

Almost surely, 2^390040487 is an apocalyptic number.

390040487 is a deficient number, since it is larger than the sum of its proper divisors (13026793).

390040487 is a wasteful number, since it uses less digits than its factorization.

390040487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89953.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 390040487 is about 19749.4427009979. The cubic root of 390040487 is about 730.6396389105.

The spelling of 390040487 in words is "three hundred ninety million, forty thousand, four hundred eighty-seven".