406523146 has 4 divisors (see below), whose sum is σ = 609784722. Its totient is φ = 203261572.

The previous prime is 406523123. The next prime is 406523179. The reversal of 406523146 is 641325604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 381772521 + 24750625 = 19539^2 + 4975^2 .

It is a super-2 number, since 2×406523146² = 330522136467474632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101630785 + ... + 101630788.

Almost surely, 2^406523146 is an apocalyptic number.

406523146 is a deficient number, since it is larger than the sum of its proper divisors (203261576).

406523146 is a wasteful number, since it uses less digits than its factorization.

406523146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203261575.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 406523146 is about 20162.4191504889. The cubic root of 406523146 is about 740.7899684172.

The spelling of 406523146 in words is "four hundred six million, five hundred twenty-three thousand, one hundred forty-six".