104138777 has 8 divisors (see below), whose sum is σ = 105588360. Its totient is φ = 102697600.

The previous prime is 104138767. The next prime is 104138789. The reversal of 104138777 is 777831401.

It can be written as a sum of positive squares in 4 ways, for example, as 7529536 + 96609241 = 2744^2 + 9829^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 104138777 - 2⁴ = 104138761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104138777.

It is not an unprimeable number, because it can be changed into a prime (104138707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25253 + ... + 29085.

It is an arithmetic number, because the mean of its divisors is an integer number (13198545).

Almost surely, 2^104138777 is an apocalyptic number.

It is an amenable number.

104138777 is a deficient number, since it is larger than the sum of its proper divisors (1449583).

104138777 is a wasteful number, since it uses less digits than its factorization.

104138777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 104138777 is about 10204.8408610816. The cubic root of 104138777 is about 470.4760184024.

The spelling of 104138777 in words is "one hundred four million, one hundred thirty-eight thousand, seven hundred seventy-seven".