945009497 has 4 divisors (see below), whose sum is σ = 945577380. Its totient is φ = 944441616.

The previous prime is 945009493. The next prime is 945009509. The reversal of 945009497 is 794900549.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794900549 = 19 ⋅41836871.

It can be written as a sum of positive squares in 2 ways, for example, as 300814336 + 644195161 = 17344^2 + 25381^2 .

It is a cyclic number.

It is not a de Polignac number, because 945009497 - 2² = 945009493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945009493) 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, 281438 + ... + 284775.

It is an arithmetic number, because the mean of its divisors is an integer number (236394345).

Almost surely, 2^945009497 is an apocalyptic number.

It is an amenable number.

945009497 is a deficient number, since it is larger than the sum of its proper divisors (567883).

945009497 is a wasteful number, since it uses less digits than its factorization.

945009497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567882.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 945009497 is about 30741.0067662073. The cubic root of 945009497 is about 981.3231803807.

The spelling of 945009497 in words is "nine hundred forty-five million, nine thousand, four hundred ninety-seven".