7946840454 has 16 divisors (see below), whose sum is σ = 18164206848. Its totient is φ = 2270525832.

The previous prime is 7946840431. The next prime is 7946840467. The reversal of 7946840454 is 4540486497.

It is a happy number.

It is a super-2 number, since 2×7946840454² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7946840397 and 7946840406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94605202 + ... + 94605285.

It is an arithmetic number, because the mean of its divisors is an integer number (1135262928).

Almost surely, 2^7946840454 is an apocalyptic number.

7946840454 is an abundant number, since it is smaller than the sum of its proper divisors (10217366394).

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

7946840454 is a wasteful number, since it uses less digits than its factorization.

7946840454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189210499.

The product of its (nonzero) digits is 3870720, while the sum is 51.

The square root of 7946840454 is about 89145.0528857323. The cubic root of 7946840454 is about 1995.5601891663.

The spelling of 7946840454 in words is "seven billion, nine hundred forty-six million, eight hundred forty thousand, four hundred fifty-four".