2979690121 has 2 divisors, whose sum is σ = 2979690122. Its totient is φ = 2979690120.

The previous prime is 2979690101. The next prime is 2979690127. The reversal of 2979690121 is 1210969792.

It is a happy number.

2979690121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1800729225 + 1178960896 = 42435^2 + 34336^2 .

It is a cyclic number.

It is not a de Polignac number, because 2979690121 - 2¹⁷ = 2979559049 is a prime.

It is not a weakly prime, because it can be changed into another prime (2979690127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489845060 + 1489845061.

It is an arithmetic number, because the mean of its divisors is an integer number (1489845061).

Almost surely, 2^2979690121 is an apocalyptic number.

It is an amenable number.

2979690121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2979690121 is an equidigital number, since it uses as much as digits as its factorization.

2979690121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 2979690121 is about 54586.5379100012. The cubic root of 2979690121 is about 1438.9875407857.

The spelling of 2979690121 in words is "two billion, nine hundred seventy-nine million, six hundred ninety thousand, one hundred twenty-one".