1087496391 has 32 divisors (see below), whose sum is σ = 1495081728. Its totient is φ = 702950400.

The previous prime is 1087496381. The next prime is 1087496401. The reversal of 1087496391 is 1936947801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1087496381) and next prime (1087496401).

It is not a de Polignac number, because 1087496391 - 2¹⁴ = 1087480007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1087496391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087496381) 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 31 ways as a sum of consecutive naturals, for example, 4790620 + ... + 4790846.

It is an arithmetic number, because the mean of its divisors is an integer number (46721304).

Almost surely, 2^1087496391 is an apocalyptic number.

1087496391 is a deficient number, since it is larger than the sum of its proper divisors (407585337).

1087496391 is a wasteful number, since it uses less digits than its factorization.

1087496391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 1087496391 is about 32977.2101761201. The cubic root of 1087496391 is about 1028.3539205283.

The spelling of 1087496391 in words is "one billion, eighty-seven million, four hundred ninety-six thousand, three hundred ninety-one".