408872465 has 4 divisors (see below), whose sum is σ = 490646964. Its totient is φ = 327097968.

The previous prime is 408872461. The next prime is 408872467. The reversal of 408872465 is 564278804.

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

It can be written as a sum of positive squares in 2 ways, for example, as 264127504 + 144744961 = 16252^2 + 12031^2 .

It is a cyclic number.

It is not a de Polignac number, because 408872465 - 2² = 408872461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408872461) 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, 40887242 + ... + 40887251.

It is an arithmetic number, because the mean of its divisors is an integer number (122661741).

Almost surely, 2^408872465 is an apocalyptic number.

It is an amenable number.

408872465 is a deficient number, since it is larger than the sum of its proper divisors (81774499).

408872465 is an equidigital number, since it uses as much as digits as its factorization.

408872465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81774498.

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 408872465 is about 20220.5950703732. The cubic root of 408872465 is about 742.2142498783.

The spelling of 408872465 in words is "four hundred eight million, eight hundred seventy-two thousand, four hundred sixty-five".