45319390 has 8 divisors (see below), whose sum is σ = 81574920. Its totient is φ = 18127752.

The previous prime is 45319381. The next prime is 45319397. The reversal of 45319390 is 9391354.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45319397) 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, 2265960 + ... + 2265979.

It is an arithmetic number, because the mean of its divisors is an integer number (10196865).

Almost surely, 2^45319390 is an apocalyptic number.

45319390 is a deficient number, since it is larger than the sum of its proper divisors (36255530).

45319390 is a wasteful number, since it uses less digits than its factorization.

45319390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531946.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 45319390 is about 6731.9677658171. The cubic root of 45319390 is about 356.5288556395.

Subtracting from 45319390 its reverse (9391354), we obtain a square (35928036 = 5994²).

The spelling of 45319390 in words is "forty-five million, three hundred nineteen thousand, three hundred ninety".