7909434 has 64 divisors (see below), whose sum is σ = 19958400. Its totient is φ = 2301696.

The previous prime is 7909423. The next prime is 7909439. The reversal of 7909434 is 4349097.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7909439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13042 + ... + 13634.

It is an arithmetic number, because the mean of its divisors is an integer number (311850).

Almost surely, 2^7909434 is an apocalyptic number.

7909434 is the 1779-th heptagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7909434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9979200).

7909434 is an abundant number, since it is smaller than the sum of its proper divisors (12048966).

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

7909434 is a wasteful number, since it uses less digits than its factorization.

7909434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 7909434 is about 2812.3715970689. The cubic root of 7909434 is about 199.2424172989.

The spelling of 7909434 in words is "seven million, nine hundred nine thousand, four hundred thirty-four".