408970987 has 4 divisors (see below), whose sum is σ = 409019056. Its totient is φ = 408922920.

The previous prime is 408970957. The next prime is 408970993. The reversal of 408970987 is 789079804.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 408970987 - 2¹⁵ = 408938219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408970937) 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, 7464 + ... + 29557.

It is an arithmetic number, because the mean of its divisors is an integer number (102254764).

Almost surely, 2^408970987 is an apocalyptic number.

408970987 is a deficient number, since it is larger than the sum of its proper divisors (48069).

408970987 is a wasteful number, since it uses less digits than its factorization.

408970987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48068.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 408970987 is about 20223.0311031754. The cubic root of 408970987 is about 742.2738597942.

It can be divided in two parts, 4089 and 70987, that added together give a square (75076 = 274²).

The spelling of 408970987 in words is "four hundred eight million, nine hundred seventy thousand, nine hundred eighty-seven".