1087989941 has 2 divisors, whose sum is σ = 1087989942. Its totient is φ = 1087989940.

The previous prime is 1087989811. The next prime is 1087989949. The reversal of 1087989941 is 1499897801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 753282916 + 334707025 = 27446^2 + 18295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087989941 - 2¹⁰ = 1087988917 is a prime.

It is a super-2 number, since 2×1087989941² = 2367444223434366962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087989949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543994970 + 543994971.

It is an arithmetic number, because the mean of its divisors is an integer number (543994971).

Almost surely, 2^1087989941 is an apocalyptic number.

It is an amenable number.

1087989941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087989941 is an equidigital number, since it uses as much as digits as its factorization.

1087989941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The square root of 1087989941 is about 32984.6925254731. The cubic root of 1087989941 is about 1028.5094665818.

The spelling of 1087989941 in words is "one billion, eighty-seven million, nine hundred eighty-nine thousand, nine hundred forty-one".