86739489 has 12 divisors (see below), whose sum is σ = 126699300. Its totient is φ = 57176064.

The previous prime is 86739481. The next prime is 86739533. The reversal of 86739489 is 98493768.

It can be written as a sum of positive squares in 2 ways, for example, as 9000000 + 77739489 = 3000^2 + 8817^2 .

It is not a de Polignac number, because 86739489 - 2³ = 86739481 is a prime.

It is a super-2 number, since 2×86739489² = 15047477903962242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86739481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53344 + ... + 54945.

It is an arithmetic number, because the mean of its divisors is an integer number (10558275).

Almost surely, 2^86739489 is an apocalyptic number.

86739489 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

86739489 is a deficient number, since it is larger than the sum of its proper divisors (39959811).

86739489 is a wasteful number, since it uses less digits than its factorization.

86739489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108384 (or 108381 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 86739489 is about 9313.4037279611. The cubic root of 86739489 is about 442.6620454102.

The spelling of 86739489 in words is "eighty-six million, seven hundred thirty-nine thousand, four hundred eighty-nine".