2939661 has 12 divisors (see below), whose sum is σ = 4469920. Its totient is φ = 1856520.

The previous prime is 2939641. The next prime is 2939663. The reversal of 2939661 is 1669392.

It is not a de Polignac number, because 2939661 - 2⁶ = 2939597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2939663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8425 + ... + 8766.

2^2939661 is an apocalyptic number.

It is an amenable number.

2939661 is a deficient number, since it is larger than the sum of its proper divisors (1530259).

2939661 is a wasteful number, since it uses less digits than its factorization.

2939661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17216 (or 17213 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 2939661 is about 1714.5439626910. The cubic root of 2939661 is about 143.2514687861.

It can be divided in two parts, 2939 and 661, that added together give a square (3600 = 60²).

The spelling of 2939661 in words is "two million, nine hundred thirty-nine thousand, six hundred sixty-one".