408697245 has 80 divisors (see below), whose sum is σ = 804988800. Its totient is φ = 196732800.

The previous prime is 408697243. The next prime is 408697259. The reversal of 408697245 is 542796804.

It is a happy number.

It is not a de Polignac number, because 408697245 - 2¹ = 408697243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 408697245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408697243) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 886315 + ... + 886775.

It is an arithmetic number, because the mean of its divisors is an integer number (10062360).

Almost surely, 2^408697245 is an apocalyptic number.

408697245 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

408697245 is a deficient number, since it is larger than the sum of its proper divisors (396291555).

408697245 is a wasteful number, since it uses less digits than its factorization.

408697245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 408697245 is about 20216.2618948212. The cubic root of 408697245 is about 742.1082108124.

The spelling of 408697245 in words is "four hundred eight million, six hundred ninety-seven thousand, two hundred forty-five".