7439969961 has 40 divisors (see below), whose sum is σ = 11499840000. Its totient is φ = 4788564480.

The previous prime is 7439969861. The next prime is 7439969993. The reversal of 7439969961 is 1699699347.

It is a de Polignac number, because none of the positive numbers 2^k-7439969961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7439969461) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1124140 + ... + 1130738.

It is an arithmetic number, because the mean of its divisors is an integer number (287496000).

Almost surely, 2^7439969961 is an apocalyptic number.

It is an amenable number.

7439969961 is a deficient number, since it is larger than the sum of its proper divisors (4059870039).

7439969961 is a wasteful number, since it uses less digits than its factorization.

7439969961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7091 (or 7082 counting only the distinct ones).

The product of its digits is 19840464, while the sum is 63.

The square root of 7439969961 is about 86255.2604830569. The cubic root of 7439969961 is about 1952.1973879976.

The spelling of 7439969961 in words is "seven billion, four hundred thirty-nine million, nine hundred sixty-nine thousand, nine hundred sixty-one".