709904979420 has 288 divisors, whose sum is σ = 2491041208320. Its totient is φ = 147885004800.

The previous prime is 709904979391. The next prime is 709904979439. The reversal of 709904979420 is 24979409907.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5544120 + ... + 5670720.

It is an arithmetic number, because the mean of its divisors is an integer number (8649448640).

Almost surely, 2^709904979420 is an apocalyptic number.

709904979420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 709904979420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245520604160).

709904979420 is an abundant number, since it is smaller than the sum of its proper divisors (1781136228900).

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

709904979420 is a wasteful number, since it uses less digits than its factorization.

709904979420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126725 (or 126710 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 709904979420 in words is "seven hundred nine billion, nine hundred four million, nine hundred seventy-nine thousand, four hundred twenty".