7639923 has 8 divisors (see below), whose sum is σ = 10203136. Its totient is φ = 5085000.

The previous prime is 7639921. The next prime is 7639927. The reversal of 7639923 is 3299367.

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

It is not a de Polignac number, because 7639923 - 2¹ = 7639921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7639921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558 + ... + 3948.

It is an arithmetic number, because the mean of its divisors is an integer number (1275392).

Almost surely, 2^7639923 is an apocalyptic number.

7639923 is a deficient number, since it is larger than the sum of its proper divisors (2563213).

7639923 is a wasteful number, since it uses less digits than its factorization.

7639923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145.

The product of its digits is 61236, while the sum is 39.

The square root of 7639923 is about 2764.0410633708. The cubic root of 7639923 is about 196.9531784249.

The spelling of 7639923 in words is "seven million, six hundred thirty-nine thousand, nine hundred twenty-three".