406064437 has 6 divisors (see below), whose sum is σ = 415729302. Its totient is φ = 396619272.

The previous prime is 406064413. The next prime is 406064441. The reversal of 406064437 is 734460604.

It can be written as a sum of positive squares in only one way, i.e., 264192516 + 141871921 = 16254^2 + 11911^2 .

It is not a de Polignac number, because 406064437 - 2²⁷ = 271846709 is a prime.

It is a super-2 number, since 2×406064437² = 329776653992253938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406064497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107958 + ... + 111655.

It is an arithmetic number, because the mean of its divisors is an integer number (69288217).

Almost surely, 2^406064437 is an apocalyptic number.

It is an amenable number.

406064437 is a deficient number, since it is larger than the sum of its proper divisors (9664865).

406064437 is an equidigital number, since it uses as much as digits as its factorization.

406064437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219699 (or 219656 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 406064437 is about 20151.0405934780. The cubic root of 406064437 is about 740.5112348702.

The spelling of 406064437 in words is "four hundred six million, sixty-four thousand, four hundred thirty-seven".