39626989 has 8 divisors (see below), whose sum is σ = 41845280. Its totient is φ = 37422000.

The previous prime is 39626981. The next prime is 39627001. The reversal of 39626989 is 98962693.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39626989 - 2³ = 39626981 is a prime.

It is a super-2 number, since 2×39626989² = 3140596514412242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39626981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3139 + ... + 9439.

It is an arithmetic number, because the mean of its divisors is an integer number (5230660).

Almost surely, 2^39626989 is an apocalyptic number.

It is an amenable number.

39626989 is a deficient number, since it is larger than the sum of its proper divisors (2218291).

39626989 is a wasteful number, since it uses less digits than its factorization.

39626989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6651.

The product of its digits is 1259712, while the sum is 52.

The square root of 39626989 is about 6294.9971405871. The cubic root of 39626989 is about 340.9288012501.

The spelling of 39626989 in words is "thirty-nine million, six hundred twenty-six thousand, nine hundred eighty-nine".