87967491 has 8 divisors (see below), whose sum is σ = 121073664. Its totient is φ = 56753160.

The previous prime is 87967489. The next prime is 87967499. The reversal of 87967491 is 19476978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87967491 - 2¹ = 87967489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87967499) 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 7 ways as a sum of consecutive naturals, for example, 472851 + ... + 473036.

It is an arithmetic number, because the mean of its divisors is an integer number (15134208).

Almost surely, 2^87967491 is an apocalyptic number.

87967491 is a deficient number, since it is larger than the sum of its proper divisors (33106173).

87967491 is a wasteful number, since it uses less digits than its factorization.

87967491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945921.

The product of its digits is 762048, while the sum is 51.

The square root of 87967491 is about 9379.0986240683. The cubic root of 87967491 is about 444.7412391188.

The spelling of 87967491 in words is "eighty-seven million, nine hundred sixty-seven thousand, four hundred ninety-one".