406666941 has 4 divisors (see below), whose sum is σ = 542222592. Its totient is φ = 271111292.

The previous prime is 406666927. The next prime is 406666951. The reversal of 406666941 is 149666604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406666941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 406666893 and 406666902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406666951) 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, 67777821 + ... + 67777826.

It is an arithmetic number, because the mean of its divisors is an integer number (135555648).

Almost surely, 2^406666941 is an apocalyptic number.

It is an amenable number.

406666941 is a deficient number, since it is larger than the sum of its proper divisors (135555651).

406666941 is a wasteful number, since it uses less digits than its factorization.

406666941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135555650.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 406666941 is about 20165.9847515563. The cubic root of 406666941 is about 740.8773019737.

The spelling of 406666941 in words is "four hundred six million, six hundred sixty-six thousand, nine hundred forty-one".