39234989 has 4 divisors (see below), whose sum is σ = 40069824. Its totient is φ = 38400156.

The previous prime is 39234983. The next prime is 39235037. The reversal of 39234989 is 98943293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39234989 - 2⁴ = 39234973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 834787 = 39234989 / (3 + 9 + 2 + 3 + 4 + 9 + 8 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39234983) 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, 417347 + ... + 417440.

It is an arithmetic number, because the mean of its divisors is an integer number (10017456).

Almost surely, 2^39234989 is an apocalyptic number.

It is an amenable number.

39234989 is a deficient number, since it is larger than the sum of its proper divisors (834835).

39234989 is an equidigital number, since it uses as much as digits as its factorization.

39234989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834834.

The product of its digits is 419904, while the sum is 47.

The square root of 39234989 is about 6263.7839202833. The cubic root of 39234989 is about 339.8008897639.

The spelling of 39234989 in words is "thirty-nine million, two hundred thirty-four thousand, nine hundred eighty-nine".