409948087 has 4 divisors (see below), whose sum is σ = 410085936. Its totient is φ = 409810240.

The previous prime is 409948079. The next prime is 409948109. The reversal of 409948087 is 780849904.

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 409948087 - 2³ = 409948079 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 409948087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409948027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64363 + ... + 70444.

It is an arithmetic number, because the mean of its divisors is an integer number (102521484).

Almost surely, 2^409948087 is an apocalyptic number.

409948087 is a deficient number, since it is larger than the sum of its proper divisors (137849).

409948087 is a wasteful number, since it uses less digits than its factorization.

409948087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137848.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 409948087 is about 20247.1747905726. The cubic root of 409948087 is about 742.8645283871.

The spelling of 409948087 in words is "four hundred nine million, nine hundred forty-eight thousand, eighty-seven".