73239669 has 12 divisors (see below), whose sum is σ = 106079116. Its totient is φ = 48693312.

The previous prime is 73239599. The next prime is 73239671. The reversal of 73239669 is 96693237.

It can be written as a sum of positive squares in 2 ways, for example, as 44756100 + 28483569 = 6690^2 + 5337^2 .

It is not a de Polignac number, because 73239669 - 2¹⁶ = 73174133 is a prime.

It is a super-2 number, since 2×73239669² = 10728098230459122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73234669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7552 + ... + 14265.

Almost surely, 2^73239669 is an apocalyptic number.

It is an amenable number.

73239669 is a deficient number, since it is larger than the sum of its proper divisors (32839447).

73239669 is a wasteful number, since it uses less digits than its factorization.

73239669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22196 (or 22193 counting only the distinct ones).

The product of its digits is 367416, while the sum is 45.

The square root of 73239669 is about 8558.0178195655. The cubic root of 73239669 is about 418.3907981072.

It can be divided in two parts, 732 and 39669, that added together give a square (40401 = 201²).

The spelling of 73239669 in words is "seventy-three million, two hundred thirty-nine thousand, six hundred sixty-nine".