409688953 has 4 divisors (see below), whose sum is σ = 409810788. Its totient is φ = 409567120.

The previous prime is 409688947. The next prime is 409688959. The reversal of 409688953 is 359886904.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (409688947) and next prime (409688959).

It can be written as a sum of positive squares in 2 ways, for example, as 38278969 + 371409984 = 6187^2 + 19272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409688953 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 409688953.

It is not an unprimeable number, because it can be changed into a prime (409688959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55726 + ... + 62647.

It is an arithmetic number, because the mean of its divisors is an integer number (102452697).

Almost surely, 2^409688953 is an apocalyptic number.

It is an amenable number.

409688953 is a deficient number, since it is larger than the sum of its proper divisors (121835).

409688953 is a wasteful number, since it uses less digits than its factorization.

409688953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121834.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 409688953 is about 20240.7745158134. The cubic root of 409688953 is about 742.7079703268.

The spelling of 409688953 in words is "four hundred nine million, six hundred eighty-eight thousand, nine hundred fifty-three".