2959981 has 2 divisors, whose sum is σ = 2959982. Its totient is φ = 2959980.

The previous prime is 2959969. The next prime is 2960003. The reversal of 2959981 is 1899592.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1602756 + 1357225 = 1266^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 2959981 - 2⁵ = 2959949 is a prime.

It is a super-2 number, since 2×2959981² = 17522975040722, which contains 22 as substring.

It is an Ulam number.

2959981 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2959951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1479990 + 1479991.

It is an arithmetic number, because the mean of its divisors is an integer number (1479991).

2^2959981 is an apocalyptic number.

It is an amenable number.

2959981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2959981 is an equidigital number, since it uses as much as digits as its factorization.

2959981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 43.

The square root of 2959981 is about 1720.4595316368. The cubic root of 2959981 is about 143.5807798289.

The spelling of 2959981 in words is "two million, nine hundred fifty-nine thousand, nine hundred eighty-one".