45988009 has 8 divisors (see below), whose sum is σ = 48909960. Its totient is φ = 43090176.

The previous prime is 45988001. The next prime is 45988013. The reversal of 45988009 is 90088954.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21187609 + 24800400 = 4603^2 + 4980^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45988009 - 2³ = 45988001 is a prime.

It is a super-2 number, since 2×45988009² = 4229793943568162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45988001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2014 + ... + 9799.

It is an arithmetic number, because the mean of its divisors is an integer number (6113745).

Almost surely, 2^45988009 is an apocalyptic number.

It is an amenable number.

45988009 is a deficient number, since it is larger than the sum of its proper divisors (2921951).

45988009 is a wasteful number, since it uses less digits than its factorization.

45988009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12059.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 45988009 is about 6781.4459372615. The cubic root of 45988009 is about 358.2736508257.

The spelling of 45988009 in words is "forty-five million, nine hundred eighty-eight thousand, nine".