2947939 has 2 divisors, whose sum is σ = 2947940. Its totient is φ = 2947938.

The previous prime is 2947897. The next prime is 2947949. The reversal of 2947939 is 9397492.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2947939 - 2¹³ = 2939747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2947895 and 2947904.

It is not a weakly prime, because it can be changed into another prime (2947949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473969 + 1473970.

It is an arithmetic number, because the mean of its divisors is an integer number (1473970).

2^2947939 is an apocalyptic number.

2947939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947939 is an equidigital number, since it uses as much as digits as its factorization.

2947939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 43.

The square root of 2947939 is about 1716.9563186057. The cubic root of 2947939 is about 143.3858067595.

The spelling of 2947939 in words is "two million, nine hundred forty-seven thousand, nine hundred thirty-nine".