39404061 has 6 divisors (see below), whose sum is σ = 56916990. Its totient is φ = 26269368.

The previous prime is 39404047. The next prime is 39404063. The reversal of 39404061 is 16040493.

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 12467961 = 5190^2 + 3531^2 .

It is not a de Polignac number, because 39404061 - 2⁷ = 39403933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39404063) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2189106 + ... + 2189123.

It is an arithmetic number, because the mean of its divisors is an integer number (9486165).

Almost surely, 2^39404061 is an apocalyptic number.

It is an amenable number.

39404061 is a deficient number, since it is larger than the sum of its proper divisors (17512929).

39404061 is a wasteful number, since it uses less digits than its factorization.

39404061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4378235 (or 4378232 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 39404061 is about 6277.2654078030. The cubic root of 39404061 is about 340.2882820282.

It can be divided in two parts, 3940 and 4061, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 39404061 in words is "thirty-nine million, four hundred four thousand, sixty-one".