2999990 has 32 divisors (see below), whose sum is σ = 6537024. Its totient is φ = 967680.

The previous prime is 2999957. The next prime is 2999999. The reversal of 2999990 is 999992.

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 (2999999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71 + ... + 2450.

It is an arithmetic number, because the mean of its divisors is an integer number (204282).

2^2999990 is an apocalyptic number.

2999990 is an abundant number, since it is smaller than the sum of its proper divisors (3537034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2999990 is a wasteful number, since it uses less digits than its factorization.

2999990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552.

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 2999990 is about 1732.0479208151. The cubic root of 2999990 is about 144.2247967806.

The spelling of 2999990 in words is "two million, nine hundred ninety-nine thousand, nine hundred ninety".