2953991 has 2 divisors, whose sum is σ = 2953992. Its totient is φ = 2953990.

The previous prime is 2953981. The next prime is 2954023. The reversal of 2953991 is 1993592.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2953991 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2953921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1476995 + 1476996.

It is an arithmetic number, because the mean of its divisors is an integer number (1476996).

2^2953991 is an apocalyptic number.

2953991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2953991 is an equidigital number, since it uses as much as digits as its factorization.

2953991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21870, while the sum is 38.

The square root of 2953991 is about 1718.7178360627. The cubic root of 2953991 is about 143.4838614508.

It can be divided in two parts, 295 and 3991, that multiplied together give a triangular number (1177345 = T₁₅₃₄).

The spelling of 2953991 in words is "two million, nine hundred fifty-three thousand, nine hundred ninety-one".