45398947 has 4 divisors (see below), whose sum is σ = 49526136. Its totient is φ = 41271760.

The previous prime is 45398933. The next prime is 45398953. The reversal of 45398947 is 74989354.

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

It is a cyclic number.

It is not a de Polignac number, because 45398947 - 2¹¹ = 45396899 is a prime.

It is a super-2 number, since 2×45398947² = 4122128777417618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45398947.

It is not an unprimeable number, because it can be changed into a prime (45398917) 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, 2063578 + ... + 2063599.

It is an arithmetic number, because the mean of its divisors is an integer number (12381534).

Almost surely, 2^45398947 is an apocalyptic number.

45398947 is a deficient number, since it is larger than the sum of its proper divisors (4127189).

45398947 is a wasteful number, since it uses less digits than its factorization.

45398947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127188.

The product of its digits is 1088640, while the sum is 49.

The square root of 45398947 is about 6737.8740712483. The cubic root of 45398947 is about 356.7373593632.

The spelling of 45398947 in words is "forty-five million, three hundred ninety-eight thousand, nine hundred forty-seven".