97669421 has 4 divisors (see below), whose sum is σ = 100051644. Its totient is φ = 95287200.

The previous prime is 97669417. The next prime is 97669423. The reversal of 97669421 is 12496679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12496679 = 13 ⋅961283.

It can be written as a sum of positive squares in 2 ways, for example, as 20475625 + 77193796 = 4525^2 + 8786^2 .

It is a cyclic number.

It is not a de Polignac number, because 97669421 - 2² = 97669417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97669423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191050 + ... + 1191131.

It is an arithmetic number, because the mean of its divisors is an integer number (25012911).

Almost surely, 2^97669421 is an apocalyptic number.

It is an amenable number.

97669421 is a deficient number, since it is larger than the sum of its proper divisors (2382223).

97669421 is a wasteful number, since it uses less digits than its factorization.

97669421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382222.

The product of its digits is 163296, while the sum is 44.

The square root of 97669421 is about 9882.7840713030. The cubic root of 97669421 is about 460.5246392810.

The spelling of 97669421 in words is "ninety-seven million, six hundred sixty-nine thousand, four hundred twenty-one".