104490405 has 80 divisors (see below), whose sum is σ = 203047680. Its totient is φ = 51228288.

The previous prime is 104490383. The next prime is 104490409. The reversal of 104490405 is 504094401.

It is not a de Polignac number, because 104490405 - 2¹⁴ = 104474021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104490409) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 284532 + ... + 284898.

It is an arithmetic number, because the mean of its divisors is an integer number (2538096).

Almost surely, 2^104490405 is an apocalyptic number.

104490405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104490405 is a deficient number, since it is larger than the sum of its proper divisors (98557275).

104490405 is a wasteful number, since it uses less digits than its factorization.

104490405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 104490405 is about 10222.0548325667. The cubic root of 104490405 is about 471.0049494388.

The spelling of 104490405 in words is "one hundred four million, four hundred ninety thousand, four hundred five".