6439692 has 48 divisors (see below), whose sum is σ = 17733632. Its totient is φ = 1779840.

The previous prime is 6439681. The next prime is 6439703. The reversal of 6439692 is 2969346.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6439681) and next prime (6439703).

It is a self number, because there is not a number n which added to its sum of digits gives 6439692.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1368 + ... + 3840.

Almost surely, 2^6439692 is an apocalyptic number.

6439692 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6439692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8866816).

6439692 is an abundant number, since it is smaller than the sum of its proper divisors (11293940).

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

6439692 is a wasteful number, since it uses less digits than its factorization.

6439692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518 (or 2516 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 6439692 is about 2537.6548228630. The cubic root of 6439692 is about 186.0465833144.

The spelling of 6439692 in words is "six million, four hundred thirty-nine thousand, six hundred ninety-two".