6406434 has 12 divisors (see below), whose sum is σ = 13880646. Its totient is φ = 2135472.

The previous prime is 6406427. The next prime is 6406447. The reversal of 6406434 is 4346046.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5774409 + 632025 = 2403^2 + 795^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6406398 and 6406407.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177939 + ... + 177974.

Almost surely, 2^6406434 is an apocalyptic number.

6406434 is an abundant number, since it is smaller than the sum of its proper divisors (7474212).

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

6406434 is a wasteful number, since it uses less digits than its factorization.

6406434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355921 (or 355918 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 6406434 is about 2531.0934396027. The cubic root of 6406434 is about 185.7257491374.

The spelling of 6406434 in words is "six million, four hundred six thousand, four hundred thirty-four".