6429490 has 16 divisors (see below), whose sum is σ = 11886552. Its totient is φ = 2502144.

The previous prime is 6429487. The next prime is 6429509. The reversal of 6429490 is 949246.

It can be written as a sum of positive squares in 4 ways, for example, as 4923961 + 1505529 = 2219^2 + 1227^2 .

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, 8319 + ... + 9058.

Almost surely, 2^6429490 is an apocalyptic number.

6429490 is a deficient number, since it is larger than the sum of its proper divisors (5457062).

6429490 is a wasteful number, since it uses less digits than its factorization.

6429490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17421.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 6429490 is about 2535.6439024437. The cubic root of 6429490 is about 185.9482840766.

The spelling of 6429490 in words is "six million, four hundred twenty-nine thousand, four hundred ninety".