63943490 has 16 divisors (see below), whose sum is σ = 123952248. Its totient is φ = 23609856.

The previous prime is 63943489. The next prime is 63943501. The reversal of 63943490 is 9434936.

It can be written as a sum of positive squares in 4 ways, for example, as 20079361 + 43864129 = 4481^2 + 6623^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245807 + ... + 246066.

Almost surely, 2^63943490 is an apocalyptic number.

63943490 is a deficient number, since it is larger than the sum of its proper divisors (60008758).

63943490 is a wasteful number, since it uses less digits than its factorization.

63943490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491893.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 63943490 is about 7996.4673450218. The cubic root of 63943490 is about 399.8822361659.

The spelling of 63943490 in words is "sixty-three million, nine hundred forty-three thousand, four hundred ninety".