109400087 has 4 divisors (see below), whose sum is σ = 109423776. Its totient is φ = 109376400.

The previous prime is 109400021. The next prime is 109400113. The reversal of 109400087 is 780004901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109400087 - 2²² = 105205783 is a prime.

It is a super-3 number, since 3×109400087³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109403087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2414 + ... + 14987.

It is an arithmetic number, because the mean of its divisors is an integer number (27355944).

Almost surely, 2^109400087 is an apocalyptic number.

109400087 is a deficient number, since it is larger than the sum of its proper divisors (23689).

109400087 is an equidigital number, since it uses as much as digits as its factorization.

109400087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23688.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 109400087 is about 10459.4496509138. The cubic root of 109400087 is about 478.2693564824.

Adding to 109400087 its reverse (780004901), we get a palindrome (889404988).

The spelling of 109400087 in words is "one hundred nine million, four hundred thousand, eighty-seven".