97799420 has 48 divisors (see below), whose sum is σ = 213228288. Its totient is φ = 37639680.

The previous prime is 97799413. The next prime is 97799437. The reversal of 97799420 is 2499779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144122 + ... + 144798.

It is an arithmetic number, because the mean of its divisors is an integer number (4442256).

Almost surely, 2^97799420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97799420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106614144).

97799420 is an abundant number, since it is smaller than the sum of its proper divisors (115428868).

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

97799420 is a wasteful number, since it uses less digits than its factorization.

97799420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 97799420 is about 9889.3589276555. The cubic root of 97799420 is about 460.7288697012.

The spelling of 97799420 in words is "ninety-seven million, seven hundred ninety-nine thousand, four hundred twenty".