406952329129 has 4 divisors (see below), whose sum is σ = 407842816084. Its totient is φ = 406061842176.

The previous prime is 406952329123. The next prime is 406952329139. The reversal of 406952329129 is 921923259604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 178525685529 + 228426643600 = 422523^2 + 477940^2 .

It is a cyclic number.

It is not a de Polignac number, because 406952329129 - 2²¹ = 406950231977 is a prime.

It is a super-2 number, since 2×406952329129² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406952329123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445242792 + ... + 445243705.

It is an arithmetic number, because the mean of its divisors is an integer number (101960704021).

Almost surely, 2^406952329129 is an apocalyptic number.

It is an amenable number.

406952329129 is a deficient number, since it is larger than the sum of its proper divisors (890486955).

406952329129 is an equidigital number, since it uses as much as digits as its factorization.

406952329129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890486954.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 406952329129 in words is "four hundred six billion, nine hundred fifty-two million, three hundred twenty-nine thousand, one hundred twenty-nine".