2939690 has 16 divisors (see below), whose sum is σ = 5698728. Its totient is φ = 1085376.

The previous prime is 2939689. The next prime is 2939693. The reversal of 2939690 is 969392.

It can be written as a sum of positive squares in 4 ways, for example, as 1745041 + 1194649 = 1321^2 + 1093^2 .

It is a super-2 number, since 2×2939690² = 17283554592200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2939693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11177 + ... + 11436.

2^2939690 is an apocalyptic number.

2939690 is a deficient number, since it is larger than the sum of its proper divisors (2759038).

2939690 is a wasteful number, since it uses less digits than its factorization.

2939690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22633.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 2939690 is about 1714.5524197294. The cubic root of 2939690 is about 143.2519398470.

The spelling of 2939690 in words is "two million, nine hundred thirty-nine thousand, six hundred ninety".