45919394 has 4 divisors (see below), whose sum is σ = 68879094. Its totient is φ = 22959696.

The previous prime is 45919387. The next prime is 45919403. The reversal of 45919394 is 49391954.

It is a happy number.

45919394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49391954 = 2 ⋅24695977.

It can be written as a sum of positive squares in only one way, i.e., 45900625 + 18769 = 6775^2 + 137^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11479847 + ... + 11479850.

Almost surely, 2^45919394 is an apocalyptic number.

45919394 is a deficient number, since it is larger than the sum of its proper divisors (22959700).

45919394 is a wasteful number, since it uses less digits than its factorization.

45919394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22959699.

The product of its digits is 174960, while the sum is 44.

The square root of 45919394 is about 6776.3850244802. The cubic root of 45919394 is about 358.0953783926.

The spelling of 45919394 in words is "forty-five million, nine hundred nineteen thousand, three hundred ninety-four".