104987905 has 8 divisors (see below), whose sum is σ = 137438784. Its totient is φ = 76354800.

The previous prime is 104987891. The next prime is 104987923. The reversal of 104987905 is 509789401.

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

It is not a de Polignac number, because 104987905 - 2⁵ = 104987873 is a prime.

It is a super-2 number, since 2×104987905² = 22044920392578050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954381 + ... + 954490.

It is an arithmetic number, because the mean of its divisors is an integer number (17179848).

Almost surely, 2^104987905 is an apocalyptic number.

It is an amenable number.

104987905 is a deficient number, since it is larger than the sum of its proper divisors (32450879).

104987905 is a wasteful number, since it uses less digits than its factorization.

104987905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908887.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 104987905 is about 10246.3605733939. The cubic root of 104987905 is about 471.7512828889.

The spelling of 104987905 in words is "one hundred four million, nine hundred eighty-seven thousand, nine hundred five".