987723441 has 12 divisors (see below), whose sum is σ = 1475908980. Its totient is φ = 635775840.

The previous prime is 987723433. The next prime is 987723449. The reversal of 987723441 is 144327789.

It is an interprime number because it is at equal distance from previous prime (987723433) and next prime (987723449).

It can be written as a sum of positive squares in 2 ways, for example, as 802872225 + 184851216 = 28335^2 + 13596^2 .

It is not a de Polignac number, because 987723441 - 2³ = 987723433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (987723449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1891930 + ... + 1892451.

It is an arithmetic number, because the mean of its divisors is an integer number (122992415).

Almost surely, 2^987723441 is an apocalyptic number.

It is an amenable number.

987723441 is a deficient number, since it is larger than the sum of its proper divisors (488185539).

987723441 is a wasteful number, since it uses less digits than its factorization.

987723441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784416 (or 3784413 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 987723441 is about 31428.0677261584. The cubic root of 987723441 is about 995.8909525216.

The spelling of 987723441 in words is "nine hundred eighty-seven million, seven hundred twenty-three thousand, four hundred forty-one".