121953487 has 2 divisors, whose sum is σ = 121953488. Its totient is φ = 121953486.

The previous prime is 121953463. The next prime is 121953509. The reversal of 121953487 is 784359121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121953487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121950487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60976743 + 60976744.

It is an arithmetic number, because the mean of its divisors is an integer number (60976744).

Almost surely, 2^121953487 is an apocalyptic number.

121953487 is a deficient number, since it is larger than the sum of its proper divisors (1).

121953487 is an equidigital number, since it uses as much as digits as its factorization.

121953487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 121953487 is about 11043.2552718843. The cubic root of 121953487 is about 495.9045284833.

The spelling of 121953487 in words is "one hundred twenty-one million, nine hundred fifty-three thousand, four hundred eighty-seven".