8687944390 has 16 divisors (see below), whose sum is σ = 15655558032. Its totient is φ = 3471342624.

The previous prime is 8687944361. The next prime is 8687944393. The reversal of 8687944390 is 934497868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8687944393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469869 + ... + 488008.

It is an arithmetic number, because the mean of its divisors is an integer number (978472377).

Almost surely, 2^8687944390 is an apocalyptic number.

8687944390 is a deficient number, since it is larger than the sum of its proper divisors (6967613642).

8687944390 is a wasteful number, since it uses less digits than its factorization.

8687944390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958791.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The square root of 8687944390 is about 93209.1432746809. The cubic root of 8687944390 is about 2055.7596810853.

The spelling of 8687944390 in words is "eight billion, six hundred eighty-seven million, nine hundred forty-four thousand, three hundred ninety".