122783997 has 8 divisors (see below), whose sum is σ = 187099456. Its totient is φ = 70162272.

The previous prime is 122783977. The next prime is 122784001. The reversal of 122783997 is 799387221.

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

It is not a de Polignac number, because 122783997 - 2¹² = 122779901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122783977) 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, 2923408 + ... + 2923449.

It is an arithmetic number, because the mean of its divisors is an integer number (23387432).

Almost surely, 2^122783997 is an apocalyptic number.

It is an amenable number.

122783997 is a deficient number, since it is larger than the sum of its proper divisors (64315459).

122783997 is an equidigital number, since it uses as much as digits as its factorization.

122783997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5846867.

The product of its digits is 381024, while the sum is 48.

The square root of 122783997 is about 11080.7940599941. The cubic root of 122783997 is about 497.0276951533.

The spelling of 122783997 in words is "one hundred twenty-two million, seven hundred eighty-three thousand, nine hundred ninety-seven".