122649893 has 4 divisors (see below), whose sum is σ = 122775648. Its totient is φ = 122524140.

The previous prime is 122649871. The next prime is 122649899. The reversal of 122649893 is 398946221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122649893 - 2⁶ = 122649829 is a prime.

It is a super-2 number, since 2×122649893² = 30085992505822898, which contains 22 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 (122649899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61403 + ... + 63368.

It is an arithmetic number, because the mean of its divisors is an integer number (30693912).

Almost surely, 2^122649893 is an apocalyptic number.

It is an amenable number.

122649893 is a deficient number, since it is larger than the sum of its proper divisors (125755).

122649893 is an equidigital number, since it uses as much as digits as its factorization.

122649893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125754.

The product of its digits is 186624, while the sum is 44.

The square root of 122649893 is about 11074.7412159382. The cubic root of 122649893 is about 496.8466789390.

The spelling of 122649893 in words is "one hundred twenty-two million, six hundred forty-nine thousand, eight hundred ninety-three".