39406220 has 48 divisors (see below), whose sum is σ = 94946880. Its totient is φ = 13457664.

The previous prime is 39406219. The next prime is 39406229. The reversal of 39406220 is 2260493.

It is a self number, because there is not a number n which added to its sum of digits gives 39406220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39406229) 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 15 ways as a sum of consecutive naturals, for example, 55226 + ... + 55934.

It is an arithmetic number, because the mean of its divisors is an integer number (1978060).

Almost surely, 2^39406220 is an apocalyptic number.

It is an amenable number.

39406220 is an abundant number, since it is smaller than the sum of its proper divisors (55540660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39406220 is a wasteful number, since it uses less digits than its factorization.

39406220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 39406220 is about 6277.4373752352. The cubic root of 39406220 is about 340.2944968613.

The spelling of 39406220 in words is "thirty-nine million, four hundred six thousand, two hundred twenty".