7840049172 has 24 divisors (see below), whose sum is σ = 18883560192. Its totient is φ = 2529048000.

The previous prime is 7840049101. The next prime is 7840049201. The reversal of 7840049172 is 2719400487.

It is a happy number.

It is a super-2 number, since 2×7840049172² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10537329 + ... + 10538072.

It is an arithmetic number, because the mean of its divisors is an integer number (786815008).

Almost surely, 2^7840049172 is an apocalyptic number.

It is an amenable number.

7840049172 is an abundant number, since it is smaller than the sum of its proper divisors (11043511020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7840049172 is a wasteful number, since it uses less digits than its factorization.

7840049172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21075439 (or 21075437 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 7840049172 is about 88544.0521548455. The cubic root of 7840049172 is about 1986.5809299792.

The spelling of 7840049172 in words is "seven billion, eight hundred forty million, forty-nine thousand, one hundred seventy-two".