112777909 has 4 divisors (see below), whose sum is σ = 112898700. Its totient is φ = 112657120.

The previous prime is 112777883. The next prime is 112777927. The reversal of 112777909 is 909777211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53333809 + 59444100 = 7303^2 + 7710^2 .

It is a cyclic number.

It is not a de Polignac number, because 112777909 - 2¹⁷ = 112646837 is a prime.

It is a super-3 number, since 3×112777909³ (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 (112777009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58984 + ... + 60865.

It is an arithmetic number, because the mean of its divisors is an integer number (28224675).

Almost surely, 2^112777909 is an apocalyptic number.

It is an amenable number.

112777909 is a deficient number, since it is larger than the sum of its proper divisors (120791).

112777909 is an equidigital number, since it uses as much as digits as its factorization.

112777909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120790.

The product of its (nonzero) digits is 55566, while the sum is 43.

The square root of 112777909 is about 10619.6943929663. The cubic root of 112777909 is about 483.1418738580.

The spelling of 112777909 in words is "one hundred twelve million, seven hundred seventy-seven thousand, nine hundred nine".