45709969 has 4 divisors (see below), whose sum is σ = 46114596. Its totient is φ = 45305344.

The previous prime is 45709949. The next prime is 45709973. The reversal of 45709969 is 96990754.

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 16711744 + 28998225 = 4088^2 + 5385^2 .

It is a cyclic number.

It is not a de Polignac number, because 45709969 - 2⁹ = 45709457 is a prime.

It is a super-2 number, since 2×45709969² = 4178802531961922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45709919) 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, 202144 + ... + 202369.

It is an arithmetic number, because the mean of its divisors is an integer number (11528649).

Almost surely, 2^45709969 is an apocalyptic number.

It is an amenable number.

45709969 is a deficient number, since it is larger than the sum of its proper divisors (404627).

45709969 is a wasteful number, since it uses less digits than its factorization.

45709969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404626.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 45709969 is about 6760.9148049654. The cubic root of 45709969 is about 357.5501590664.

The spelling of 45709969 in words is "forty-five million, seven hundred nine thousand, nine hundred sixty-nine".