45197394 has 16 divisors (see below), whose sum is σ = 98612640. Its totient is φ = 13696160.

The previous prime is 45197359. The next prime is 45197413. The reversal of 45197394 is 49379154.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342339 + ... + 342470.

It is an arithmetic number, because the mean of its divisors is an integer number (6163290).

Almost surely, 2^45197394 is an apocalyptic number.

45197394 is an abundant number, since it is smaller than the sum of its proper divisors (53415246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45197394 is a wasteful number, since it uses less digits than its factorization.

45197394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684825.

The product of its digits is 136080, while the sum is 42.

The square root of 45197394 is about 6722.9007132338. The cubic root of 45197394 is about 356.2086528806.

The spelling of 45197394 in words is "forty-five million, one hundred ninety-seven thousand, three hundred ninety-four".