122877399 has 4 divisors (see below), whose sum is σ = 163836536. Its totient is φ = 81918264.

The previous prime is 122877383. The next prime is 122877421. The reversal of 122877399 is 993778221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993778221 = 3 ⋅331259407.

It is not a de Polignac number, because 122877399 - 2⁴ = 122877383 is a prime.

It is a super-3 number, since 3×122877399³ (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 (122877319) 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, 20479564 + ... + 20479569.

It is an arithmetic number, because the mean of its divisors is an integer number (40959134).

Almost surely, 2^122877399 is an apocalyptic number.

122877399 is a deficient number, since it is larger than the sum of its proper divisors (40959137).

122877399 is an equidigital number, since it uses as much as digits as its factorization.

122877399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40959136.

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

The square root of 122877399 is about 11085.0078484411. The cubic root of 122877399 is about 497.1536931537.

The spelling of 122877399 in words is "one hundred twenty-two million, eight hundred seventy-seven thousand, three hundred ninety-nine".