406490637 has 8 divisors (see below), whose sum is σ = 619414336. Its totient is φ = 232280352.

The previous prime is 406490611. The next prime is 406490657. The reversal of 406490637 is 736094604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 406490637 - 2⁶ = 406490573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406490595 and 406490604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406490657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9678328 + ... + 9678369.

It is an arithmetic number, because the mean of its divisors is an integer number (77426792).

Almost surely, 2^406490637 is an apocalyptic number.

It is an amenable number.

406490637 is a deficient number, since it is larger than the sum of its proper divisors (212923699).

406490637 is a wasteful number, since it uses less digits than its factorization.

406490637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19356707.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 406490637 is about 20161.6129563088. The cubic root of 406490637 is about 740.7702212980.

The spelling of 406490637 in words is "four hundred six million, four hundred ninety thousand, six hundred thirty-seven".