2429770621 has 2 divisors, whose sum is σ = 2429770622. Its totient is φ = 2429770620.

The previous prime is 2429770583. The next prime is 2429770639. The reversal of 2429770621 is 1260779242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2189210521 + 240560100 = 46789^2 + 15510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2429770621 - 2⁷ = 2429770493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2429770661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1214885310 + 1214885311.

It is an arithmetic number, because the mean of its divisors is an integer number (1214885311).

Almost surely, 2^2429770621 is an apocalyptic number.

It is an amenable number.

2429770621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2429770621 is an equidigital number, since it uses as much as digits as its factorization.

2429770621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 2429770621 is about 49292.7035269927. The cubic root of 2429770621 is about 1344.3791205727.

The spelling of 2429770621 in words is "two billion, four hundred twenty-nine million, seven hundred seventy thousand, six hundred twenty-one".