87890499 has 6 divisors (see below), whose sum is σ = 126952956. Its totient is φ = 58593660.

The previous prime is 87890431. The next prime is 87890501. The reversal of 87890499 is 99409878.

It is not a de Polignac number, because 87890499 - 2¹³ = 87882307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87891499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4882797 + ... + 4882814.

It is an arithmetic number, because the mean of its divisors is an integer number (21158826).

Almost surely, 2^87890499 is an apocalyptic number.

87890499 is a deficient number, since it is larger than the sum of its proper divisors (39062457).

87890499 is a wasteful number, since it uses less digits than its factorization.

87890499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9765617 (or 9765614 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 87890499 is about 9374.9932799976. The cubic root of 87890499 is about 444.6114505961.

The spelling of 87890499 in words is "eighty-seven million, eight hundred ninety thousand, four hundred ninety-nine".