87849497 has 16 divisors (see below), whose sum is σ = 93085200. Its totient is φ = 82790400.

The previous prime is 87849493. The next prime is 87849527. The reversal of 87849497 is 79494878.

It can be written as a sum of positive squares in 8 ways, for example, as 33856 + 87815641 = 184^2 + 9371^2 .

It is a cyclic number.

It is not a de Polignac number, because 87849497 - 2² = 87849493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87849493) 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, 260513 + ... + 260849.

It is an arithmetic number, because the mean of its divisors is an integer number (5817825).

Almost surely, 2^87849497 is an apocalyptic number.

It is an amenable number.

87849497 is a deficient number, since it is larger than the sum of its proper divisors (5235703).

87849497 is a wasteful number, since it uses less digits than its factorization.

87849497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556.

The product of its digits is 4064256, while the sum is 56.

The square root of 87849497 is about 9372.8062499979. The cubic root of 87849497 is about 444.5423009365.

It can be divided in two parts, 8784 and 9497, that added together give a palindrome (18281).

The spelling of 87849497 in words is "eighty-seven million, eight hundred forty-nine thousand, four hundred ninety-seven".