390883426 has 4 divisors (see below), whose sum is σ = 586325142. Its totient is φ = 195441712.

The previous prime is 390883417. The next prime is 390883501. The reversal of 390883426 is 624388093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624388093 = 7 ⋅89198299.

It can be written as a sum of positive squares in only one way, i.e., 282744225 + 108139201 = 16815^2 + 10399^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97720855 + ... + 97720858.

Almost surely, 2^390883426 is an apocalyptic number.

390883426 is a deficient number, since it is larger than the sum of its proper divisors (195441716).

390883426 is a wasteful number, since it uses less digits than its factorization.

390883426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195441715.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 390883426 is about 19770.7720132523. The cubic root of 390883426 is about 731.1656026881.

The spelling of 390883426 in words is "three hundred ninety million, eight hundred eighty-three thousand, four hundred twenty-six".