7890993434 has 8 divisors (see below), whose sum is σ = 11842335648. Its totient is φ = 3943548220.

The previous prime is 7890993413. The next prime is 7890993437. The reversal of 7890993434 is 4343990987.

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

It is a super-2 number, since 2×7890993434² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7890993434.

It is not an unprimeable number, because it can be changed into a prime (7890993437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969182 + ... + 977289.

It is an arithmetic number, because the mean of its divisors is an integer number (1480291956).

Almost surely, 2^7890993434 is an apocalyptic number.

7890993434 is a deficient number, since it is larger than the sum of its proper divisors (3951342214).

7890993434 is a wasteful number, since it uses less digits than its factorization.

7890993434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948500.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The square root of 7890993434 is about 88831.2638320541. The cubic root of 7890993434 is about 1990.8745458695.

The spelling of 7890993434 in words is "seven billion, eight hundred ninety million, nine hundred ninety-three thousand, four hundred thirty-four".