3499640 has 16 divisors (see below), whose sum is σ = 7874280. Its totient is φ = 1399840.

The previous prime is 3499619. The next prime is 3499651. The reversal of 3499640 is 469943.

It is a happy number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 3499640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43706 + ... + 43785.

Almost surely, 2^3499640 is an apocalyptic number.

It is an amenable number.

3499640 is an abundant number, since it is smaller than the sum of its proper divisors (4374640).

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

3499640 is a wasteful number, since it uses less digits than its factorization.

3499640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87502 (or 87498 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 3499640 is about 1870.7324768657. The cubic root of 3499640 is about 151.8242428342.

The spelling of 3499640 in words is "three million, four hundred ninety-nine thousand, six hundred forty".