97439580 has 144 divisors (see below), whose sum is σ = 357739200. Its totient is φ = 20957184.

The previous prime is 97439579. The next prime is 97439647. The reversal of 97439580 is 8593479.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 19146 + ... + 23694.

It is an arithmetic number, because the mean of its divisors is an integer number (2484300).

Almost surely, 2^97439580 is an apocalyptic number.

97439580 is a gapful number since it is divisible by the number (90) 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 97439580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178869600).

97439580 is an abundant number, since it is smaller than the sum of its proper divisors (260299620).

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

97439580 is a wasteful number, since it uses less digits than its factorization.

97439580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588 (or 4583 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 97439580 is about 9871.1488693059. The cubic root of 97439580 is about 460.1631116575.

The spelling of 97439580 in words is "ninety-seven million, four hundred thirty-nine thousand, five hundred eighty".