1087779207 has 4 divisors (see below), whose sum is σ = 1450372280. Its totient is φ = 725186136.

The previous prime is 1087779167. The next prime is 1087779239. The reversal of 1087779207 is 7029777801.

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

It is not a de Polignac number, because 1087779207 - 2²⁴ = 1071001991 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 (1087779107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181296532 + ... + 181296537.

It is an arithmetic number, because the mean of its divisors is an integer number (362593070).

Almost surely, 2^1087779207 is an apocalyptic number.

1087779207 is a deficient number, since it is larger than the sum of its proper divisors (362593073).

1087779207 is an equidigital number, since it uses as much as digits as its factorization.

1087779207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362593072.

The product of its (nonzero) digits is 345744, while the sum is 48.

The square root of 1087779207 is about 32981.4979496080. The cubic root of 1087779207 is about 1028.4430579074.

The spelling of 1087779207 in words is "one billion, eighty-seven million, seven hundred seventy-nine thousand, two hundred seven".