39222140 has 12 divisors (see below), whose sum is σ = 82366536. Its totient is φ = 15688848.

The previous prime is 39222133. The next prime is 39222143. The reversal of 39222140 is 4122293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39222143) 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, 980534 + ... + 980573.

It is an arithmetic number, because the mean of its divisors is an integer number (6863878).

Almost surely, 2^39222140 is an apocalyptic number.

It is an amenable number.

39222140 is an abundant number, since it is smaller than the sum of its proper divisors (43144396).

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

39222140 is a wasteful number, since it uses less digits than its factorization.

39222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961116 (or 1961114 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 39222140 is about 6262.7581783109. The cubic root of 39222140 is about 339.7637921082.

The spelling of 39222140 in words is "thirty-nine million, two hundred twenty-two thousand, one hundred forty".