2909998 has 32 divisors (see below), whose sum is σ = 5483520. Its totient is φ = 1127520.

The previous prime is 2909993. The next prime is 2910007. The reversal of 2909998 is 8999092.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2909993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10603 + ... + 10873.

It is an arithmetic number, because the mean of its divisors is an integer number (171360).

2^2909998 is an apocalyptic number.

2909998 is a deficient number, since it is larger than the sum of its proper divisors (2573522).

2909998 is a wasteful number, since it uses less digits than its factorization.

2909998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 2909998 is about 1705.8716247127. The cubic root of 2909998 is about 142.7680069665.

The spelling of 2909998 in words is "two million, nine hundred nine thousand, nine hundred ninety-eight".