39745145 has 8 divisors (see below), whose sum is σ = 52030080. Its totient is φ = 28905520.

The previous prime is 39745117. The next prime is 39745159. The reversal of 39745145 is 54154793.

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

It is not a de Polignac number, because 39745145 - 2⁸ = 39744889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39745099 and 39745108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361265 + ... + 361374.

It is an arithmetic number, because the mean of its divisors is an integer number (6503760).

Almost surely, 2^39745145 is an apocalyptic number.

It is an amenable number.

39745145 is a deficient number, since it is larger than the sum of its proper divisors (12284935).

39745145 is a wasteful number, since it uses less digits than its factorization.

39745145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722655.

The product of its digits is 75600, while the sum is 38.

The square root of 39745145 is about 6304.3750681570. The cubic root of 39745145 is about 341.2673147525.

It can be divided in two parts, 3974 and 5145, that added together give a palindrome (9119).

The spelling of 39745145 in words is "thirty-nine million, seven hundred forty-five thousand, one hundred forty-five".