122379977 has 2 divisors, whose sum is σ = 122379978. Its totient is φ = 122379976.

The previous prime is 122379967. The next prime is 122380019. The reversal of 122379977 is 779973221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72522256 + 49857721 = 8516^2 + 7061^2 .

It is a cyclic number.

It is not a de Polignac number, because 122379977 - 2¹² = 122375881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122379937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61189988 + 61189989.

It is an arithmetic number, because the mean of its divisors is an integer number (61189989).

Almost surely, 2^122379977 is an apocalyptic number.

It is an amenable number.

122379977 is a deficient number, since it is larger than the sum of its proper divisors (1).

122379977 is an equidigital number, since it uses as much as digits as its factorization.

122379977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 47.

The square root of 122379977 is about 11062.5483953744. The cubic root of 122379977 is about 496.4819405719.

The spelling of 122379977 in words is "one hundred twenty-two million, three hundred seventy-nine thousand, nine hundred seventy-seven".