63890942 has 4 divisors (see below), whose sum is σ = 95836416. Its totient is φ = 31945470.

The previous prime is 63890899. The next prime is 63890951. The reversal of 63890942 is 24909836.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 63890942.

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, 15972734 + ... + 15972737.

It is an arithmetic number, because the mean of its divisors is an integer number (23959104).

Almost surely, 2^63890942 is an apocalyptic number.

63890942 is a deficient number, since it is larger than the sum of its proper divisors (31945474).

63890942 is a wasteful number, since it uses less digits than its factorization.

63890942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31945473.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 63890942 is about 7993.1809688008. The cubic root of 63890942 is about 399.7726666567.

The spelling of 63890942 in words is "sixty-three million, eight hundred ninety thousand, nine hundred forty-two".