3499990 has 48 divisors (see below), whose sum is σ = 7246800. Its totient is φ = 1213056.

The previous prime is 3499973. The next prime is 3499999. The reversal of 3499990 is 999943.

3499990 = T₂₉ + T₃₀ + ... + T₂₇₅.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3499999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32056 + ... + 32164.

It is an arithmetic number, because the mean of its divisors is an integer number (150975).

Almost surely, 2^3499990 is an apocalyptic number.

3499990 is an abundant number, since it is smaller than the sum of its proper divisors (3746810).

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

3499990 is a wasteful number, since it uses less digits than its factorization.

3499990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 3499990 is about 1870.8260207726. The cubic root of 3499990 is about 151.8293039942.

It can be divided in two parts, 3499 and 990, that added together give a square (4489 = 67²).

The spelling of 3499990 in words is "three million, four hundred ninety-nine thousand, nine hundred ninety".