45158399 has 16 divisors (see below), whose sum is σ = 54190080. Its totient is φ = 37083360.

The previous prime is 45158371. The next prime is 45158411. The reversal of 45158399 is 99385154.

It is a happy number.

It is a Cunningham number, because it is equal to 6720²-1.

It is a cyclic number.

It is not a de Polignac number, because 45158399 - 2⁸ = 45158143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45158329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3362 + ... + 10080.

It is an arithmetic number, because the mean of its divisors is an integer number (3386880).

Almost surely, 2^45158399 is an apocalyptic number.

45158399 is a deficient number, since it is larger than the sum of its proper divisors (9031681).

45158399 is a wasteful number, since it uses less digits than its factorization.

45158399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6790.

The product of its digits is 194400, while the sum is 44.

The square root of 45158399 is about 6719.9999255952. Note that the first 4 decimals coincide. The cubic root of 45158399 is about 356.1061812421.

The spelling of 45158399 in words is "forty-five million, one hundred fifty-eight thousand, three hundred ninety-nine".