45479009 has 4 divisors (see below), whose sum is σ = 45517716. Its totient is φ = 45440304.

The previous prime is 45479003. The next prime is 45479011. The reversal of 45479009 is 90097454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5536609 + 39942400 = 2353^2 + 6320^2 .

It is a cyclic number.

It is not a de Polignac number, because 45479009 - 2⁸ = 45478753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45479003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17534 + ... + 19959.

It is an arithmetic number, because the mean of its divisors is an integer number (11379429).

Almost surely, 2^45479009 is an apocalyptic number.

It is an amenable number.

45479009 is a deficient number, since it is larger than the sum of its proper divisors (38707).

45479009 is a wasteful number, since it uses less digits than its factorization.

45479009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38706.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 45479009 is about 6743.8126456775. The cubic root of 45479009 is about 356.9469408286.

The spelling of 45479009 in words is "forty-five million, four hundred seventy-nine thousand, nine".