39497161 has 16 divisors (see below), whose sum is σ = 44201088. Its totient is φ = 34992000.

The previous prime is 39497147. The next prime is 39497173. The reversal of 39497161 is 16179493.

It is a 7-Lehmer number, since φ(39497161) divides (39497161-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 39497161 - 2¹⁵ = 39464393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39497191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80860 + ... + 81346.

It is an arithmetic number, because the mean of its divisors is an integer number (2762568).

Almost surely, 2^39497161 is an apocalyptic number.

It is an amenable number.

39497161 is a deficient number, since it is larger than the sum of its proper divisors (4703927).

39497161 is a wasteful number, since it uses less digits than its factorization.

39497161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 40824, while the sum is 40.

The square root of 39497161 is about 6284.6766822168. The cubic root of 39497161 is about 340.5560710172.

The spelling of 39497161 in words is "thirty-nine million, four hundred ninety-seven thousand, one hundred sixty-one".