39801197 has 4 divisors (see below), whose sum is σ = 39814236. Its totient is φ = 39788160.

The previous prime is 39801193. The next prime is 39801211. The reversal of 39801197 is 79110893.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79110893 = 193 ⋅409901.

It can be written as a sum of positive squares in 2 ways, for example, as 12823561 + 26977636 = 3581^2 + 5194^2 .

It is a cyclic number.

It is not a de Polignac number, because 39801197 - 2² = 39801193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39801197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39801191) 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, 797 + ... + 8957.

It is an arithmetic number, because the mean of its divisors is an integer number (9953559).

Almost surely, 2^39801197 is an apocalyptic number.

It is an amenable number.

39801197 is a deficient number, since it is larger than the sum of its proper divisors (13039).

39801197 is an equidigital number, since it uses as much as digits as its factorization.

39801197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13038.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 39801197 is about 6308.8189861495. The cubic root of 39801197 is about 341.4276675054.

The spelling of 39801197 in words is "thirty-nine million, eight hundred one thousand, one hundred ninety-seven".