6429980 has 24 divisors (see below), whose sum is σ = 14214480. Its totient is φ = 2436480.

The previous prime is 6429977. The next prime is 6430003. The reversal of 6429980 is 899246.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8081 + ... + 8840.

It is an arithmetic number, because the mean of its divisors is an integer number (592270).

Almost surely, 2^6429980 is an apocalyptic number.

It is an amenable number.

6429980 is an abundant number, since it is smaller than the sum of its proper divisors (7784500).

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

6429980 is a wasteful number, since it uses less digits than its factorization.

6429980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16949 (or 16947 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 6429980 is about 2535.7405230031. The cubic root of 6429980 is about 185.9530077455.

The spelling of 6429980 in words is "six million, four hundred twenty-nine thousand, nine hundred eighty".