406454902919 has 4 divisors (see below), whose sum is σ = 437720664696. Its totient is φ = 375189141144.

The previous prime is 406454902913. The next prime is 406454902937. The reversal of 406454902919 is 919209454604.

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 406454902919 - 2²⁰ = 406453854343 is a prime.

It is a super-2 number, since 2×406454902919² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406454902913) 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, 15632880869 + ... + 15632880894.

It is an arithmetic number, because the mean of its divisors is an integer number (109430166174).

Almost surely, 2^406454902919 is an apocalyptic number.

406454902919 is a deficient number, since it is larger than the sum of its proper divisors (31265761777).

406454902919 is a wasteful number, since it uses less digits than its factorization.

406454902919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31265761776.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 406454902919 in words is "four hundred six billion, four hundred fifty-four million, nine hundred two thousand, nine hundred nineteen".