408919679 has 8 divisors (see below), whose sum is σ = 469294080. Its totient is φ = 349034616.

The previous prime is 408919673. The next prime is 408919703. The reversal of 408919679 is 976919804.

It is a happy number.

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

It is not a de Polignac number, because 408919679 - 2¹⁶ = 408854143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 408919679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408919673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120539 + ... + 123884.

It is an arithmetic number, because the mean of its divisors is an integer number (58661760).

Almost surely, 2^408919679 is an apocalyptic number.

408919679 is a deficient number, since it is larger than the sum of its proper divisors (60374401).

408919679 is a wasteful number, since it uses less digits than its factorization.

408919679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244669.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 408919679 is about 20221.7625097319. The cubic root of 408919679 is about 742.2428175107.

The spelling of 408919679 in words is "four hundred eight million, nine hundred nineteen thousand, six hundred seventy-nine".