99987862 has 32 divisors (see below), whose sum is σ = 164892672. Its totient is φ = 45196704.

The previous prime is 99987817. The next prime is 99987869. The reversal of 99987862 is 26878999.

It is a junction number, because it is equal to n+sod(n) for n = 99987797 and 99987806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99987869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353173 + ... + 353455.

It is an arithmetic number, because the mean of its divisors is an integer number (5152896).

Almost surely, 2^99987862 is an apocalyptic number.

99987862 is a deficient number, since it is larger than the sum of its proper divisors (64904810).

99987862 is a wasteful number, since it uses less digits than its factorization.

99987862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 3919104, while the sum is 58.

The square root of 99987862 is about 9999.3930815825. The cubic root of 99987862 is about 464.1401027330.

The spelling of 99987862 in words is "ninety-nine million, nine hundred eighty-seven thousand, eight hundred sixty-two".