121671479 has 2 divisors, whose sum is σ = 121671480. Its totient is φ = 121671478.

The previous prime is 121671409. The next prime is 121671527. The reversal of 121671479 is 974176121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121671479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121671409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60835739 + 60835740.

It is an arithmetic number, because the mean of its divisors is an integer number (60835740).

Almost surely, 2^121671479 is an apocalyptic number.

121671479 is a deficient number, since it is larger than the sum of its proper divisors (1).

121671479 is an equidigital number, since it uses as much as digits as its factorization.

121671479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 38.

The square root of 121671479 is about 11030.4795453326. The cubic root of 121671479 is about 495.5219865183.

The spelling of 121671479 in words is "one hundred twenty-one million, six hundred seventy-one thousand, four hundred seventy-nine".