97391487 has 8 divisors (see below), whose sum is σ = 137493936. Its totient is φ = 61108352.

The previous prime is 97391479. The next prime is 97391513. The reversal of 97391487 is 78419379.

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

It is a cyclic number.

It is not a de Polignac number, because 97391487 - 2³ = 97391479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97391447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 954768 + ... + 954869.

It is an arithmetic number, because the mean of its divisors is an integer number (17186742).

Almost surely, 2^97391487 is an apocalyptic number.

97391487 is a deficient number, since it is larger than the sum of its proper divisors (40102449).

97391487 is a wasteful number, since it uses less digits than its factorization.

97391487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909657.

The product of its digits is 381024, while the sum is 48.

The square root of 97391487 is about 9868.7125300112. The cubic root of 97391487 is about 460.0873920286.

The spelling of 97391487 in words is "ninety-seven million, three hundred ninety-one thousand, four hundred eighty-seven".