390561494 has 8 divisors (see below), whose sum is σ = 586067400. Its totient is φ = 195205696.

The previous prime is 390561487. The next prime is 390561517. The reversal of 390561494 is 494165093.

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

It is a super-4 number, since 4×390561494⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 30779 + ... + 41574.

It is an arithmetic number, because the mean of its divisors is an integer number (73258425).

Almost surely, 2^390561494 is an apocalyptic number.

390561494 is a deficient number, since it is larger than the sum of its proper divisors (195505906).

390561494 is a wasteful number, since it uses less digits than its factorization.

390561494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75054.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 390561494 is about 19762.6287219084. The cubic root of 390561494 is about 730.9648179699.

The spelling of 390561494 in words is "three hundred ninety million, five hundred sixty-one thousand, four hundred ninety-four".