39902223 has 16 divisors (see below), whose sum is σ = 56246400. Its totient is φ = 25092000.

The previous prime is 39902197. The next prime is 39902251. The reversal of 39902223 is 32220993.

It is a happy number.

It is not a de Polignac number, because 39902223 - 2¹² = 39898127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39902273) 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, 12913 + ... + 15701.

It is an arithmetic number, because the mean of its divisors is an integer number (3515400).

Almost surely, 2^39902223 is an apocalyptic number.

39902223 is a deficient number, since it is larger than the sum of its proper divisors (16344177).

39902223 is a wasteful number, since it uses less digits than its factorization.

39902223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 39902223 is about 6316.8206401638. The cubic root of 39902223 is about 341.7163014413.

The spelling of 39902223 in words is "thirty-nine million, nine hundred two thousand, two hundred twenty-three".