406947945 has 8 divisors (see below), whose sum is σ = 651116736. Its totient is φ = 217038896.

The previous prime is 406947913. The next prime is 406947967. The reversal of 406947945 is 549749604.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 406947945 - 2⁵ = 406947913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406947894 and 406947903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13564917 + ... + 13564946.

It is an arithmetic number, because the mean of its divisors is an integer number (81389592).

Almost surely, 2^406947945 is an apocalyptic number.

It is an amenable number.

406947945 is a deficient number, since it is larger than the sum of its proper divisors (244168791).

406947945 is a wasteful number, since it uses less digits than its factorization.

406947945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27129871.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 406947945 is about 20172.9508253007. The cubic root of 406947945 is about 741.0479096875.

The spelling of 406947945 in words is "four hundred six million, nine hundred forty-seven thousand, nine hundred forty-five".