39223481 has 6 divisors (see below), whose sum is σ = 43113546. Its totient is φ = 35657600.

The previous prime is 39223447. The next prime is 39223489. The reversal of 39223481 is 18432293.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39175081 + 48400 = 6259^2 + 220^2 .

It is not a de Polignac number, because 39223481 - 2⁶ = 39223417 is a prime.

It is a super-2 number, since 2×39223481² = 3076962923514722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39223489) 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, 161960 + ... + 162201.

It is an arithmetic number, because the mean of its divisors is an integer number (7185591).

Almost surely, 2^39223481 is an apocalyptic number.

It is an amenable number.

39223481 is a deficient number, since it is larger than the sum of its proper divisors (3890065).

39223481 is a wasteful number, since it uses less digits than its factorization.

39223481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324183 (or 324172 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 39223481 is about 6262.8652388503. The cubic root of 39223481 is about 339.7676642244.

The spelling of 39223481 in words is "thirty-nine million, two hundred twenty-three thousand, four hundred eighty-one".