2939420389 has 2 divisors, whose sum is σ = 2939420390. Its totient is φ = 2939420388.

The previous prime is 2939420371. The next prime is 2939420399. The reversal of 2939420389 is 9830249392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2461648225 + 477772164 = 49615^2 + 21858^2 .

It is a cyclic number.

It is not a de Polignac number, because 2939420389 - 2¹¹ = 2939418341 is a prime.

It is a super-2 number, since 2×2939420389² = 17280384446537822642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2939420329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1469710194 + 1469710195.

It is an arithmetic number, because the mean of its divisors is an integer number (1469710195).

Almost surely, 2^2939420389 is an apocalyptic number.

It is an amenable number.

2939420389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2939420389 is an equidigital number, since it uses as much as digits as its factorization.

2939420389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 2939420389 is about 54216.4217649966. The cubic root of 2939420389 is about 1432.4756030595.

The spelling of 2939420389 in words is "two billion, nine hundred thirty-nine million, four hundred twenty thousand, three hundred eighty-nine".