406440046 has 16 divisors (see below), whose sum is σ = 667783440. Its totient is φ = 184670080.

The previous prime is 406440019. The next prime is 406440053. The reversal of 406440046 is 640044604.

It is a junction number, because it is equal to n+sod(n) for n = 406439996 and 406440023.

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, 205120 + ... + 207091.

It is an arithmetic number, because the mean of its divisors is an integer number (41736465).

Almost surely, 2^406440046 is an apocalyptic number.

406440046 is a deficient number, since it is larger than the sum of its proper divisors (261343394).

406440046 is a wasteful number, since it uses less digits than its factorization.

406440046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412259.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 406440046 is about 20160.3582805465. The cubic root of 406440046 is about 740.7394884367.

The spelling of 406440046 in words is "four hundred six million, four hundred forty thousand, forty-six".