97829479 has 4 divisors (see below), whose sum is σ = 106723080. Its totient is φ = 88935880.

The previous prime is 97829453. The next prime is 97829483. The reversal of 97829479 is 97492879.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 97829479 - 2²¹ = 95732327 is a prime.

It is a super-2 number, since 2×97829479² = 19141213922822882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97829489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4446784 + ... + 4446805.

It is an arithmetic number, because the mean of its divisors is an integer number (26680770).

Almost surely, 2^97829479 is an apocalyptic number.

97829479 is a deficient number, since it is larger than the sum of its proper divisors (8893601).

97829479 is a wasteful number, since it uses less digits than its factorization.

97829479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8893600.

The product of its digits is 2286144, while the sum is 55.

The square root of 97829479 is about 9890.8785757384. The cubic root of 97829479 is about 460.7760670857.

The spelling of 97829479 in words is "ninety-seven million, eight hundred twenty-nine thousand, four hundred seventy-nine".