390780463636 has 6 divisors (see below), whose sum is σ = 683865811370. Its totient is φ = 195390231816.

The previous prime is 390780463627. The next prime is 390780463657. The reversal of 390780463636 is 636364087093.

It can be written as a sum of positive squares in only one way, i.e., 222151968900 + 168628494736 = 471330^2 + 410644^2 .

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 as a sum of consecutive naturals, namely, 48847557951 + ... + 48847557958.

Almost surely, 2^390780463636 is an apocalyptic number.

It is an amenable number.

390780463636 is a deficient number, since it is larger than the sum of its proper divisors (293085347734).

390780463636 is a wasteful number, since it uses less digits than its factorization.

390780463636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97695115913 (or 97695115911 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 55.

The spelling of 390780463636 in words is "three hundred ninety billion, seven hundred eighty million, four hundred sixty-three thousand, six hundred thirty-six".