407969447 has 4 divisors (see below), whose sum is σ = 416649696. Its totient is φ = 399289200.

The previous prime is 407969413. The next prime is 407969453. The reversal of 407969447 is 744969704.

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

It is a cyclic number.

It is not a de Polignac number, because 407969447 - 2²⁸ = 139533991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 407969395 and 407969404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407969047) 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, 4340054 + ... + 4340147.

It is an arithmetic number, because the mean of its divisors is an integer number (104162424).

Almost surely, 2^407969447 is an apocalyptic number.

407969447 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

407969447 is a deficient number, since it is larger than the sum of its proper divisors (8680249).

407969447 is an equidigital number, since it uses as much as digits as its factorization.

407969447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8680248.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The square root of 407969447 is about 20198.2535631178. The cubic root of 407969447 is about 741.6674397220.

The spelling of 407969447 in words is "four hundred seven million, nine hundred sixty-nine thousand, four hundred forty-seven".