39221427 has 16 divisors (see below), whose sum is σ = 61827840. Its totient is φ = 21639072.

The previous prime is 39221423. The next prime is 39221447. The reversal of 39221427 is 72412293.

It is not a de Polignac number, because 39221427 - 2² = 39221423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39221394 and 39221403.

It is not an unprimeable number, because it can be changed into a prime (39221423) 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, 31593 + ... + 32810.

It is an arithmetic number, because the mean of its divisors is an integer number (3864240).

Almost surely, 2^39221427 is an apocalyptic number.

39221427 is a deficient number, since it is larger than the sum of its proper divisors (22606413).

39221427 is a wasteful number, since it uses less digits than its factorization.

39221427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64442.

The product of its digits is 6048, while the sum is 30.

The square root of 39221427 is about 6262.7012542512. The cubic root of 39221427 is about 339.7617332961.

The spelling of 39221427 in words is "thirty-nine million, two hundred twenty-one thousand, four hundred twenty-seven".