869620487 has 4 divisors (see below), whose sum is σ = 869782536. Its totient is φ = 869458440.

The previous prime is 869620483. The next prime is 869620523. The reversal of 869620487 is 784026968.

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 869620487 - 2² = 869620483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869620483) 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, 72689 + ... + 83802.

It is an arithmetic number, because the mean of its divisors is an integer number (217445634).

Almost surely, 2^869620487 is an apocalyptic number.

869620487 is a deficient number, since it is larger than the sum of its proper divisors (162049).

869620487 is a wasteful number, since it uses less digits than its factorization.

869620487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162048.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 869620487 is about 29489.3283578992. The cubic root of 869620487 is about 954.5014391020.

The spelling of 869620487 in words is "eight hundred sixty-nine million, six hundred twenty thousand, four hundred eighty-seven".