121453893 has 12 divisors (see below), whose sum is σ = 191382048. Its totient is φ = 73608360.

The previous prime is 121453883. The next prime is 121453907. The reversal of 121453893 is 398354121.

121453893 is a `hidden beast` number, since 121 + 453 + 89 + 3 = 666.

It is not a de Polignac number, because 121453893 - 2⁵ = 121453861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121453873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613305 + ... + 613502.

It is an arithmetic number, because the mean of its divisors is an integer number (15948504).

Almost surely, 2^121453893 is an apocalyptic number.

It is an amenable number.

121453893 is a deficient number, since it is larger than the sum of its proper divisors (69928155).

121453893 is a wasteful number, since it uses less digits than its factorization.

121453893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226824 (or 1226821 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 121453893 is about 11020.6121880774. The cubic root of 121453893 is about 495.2264283953.

The spelling of 121453893 in words is "one hundred twenty-one million, four hundred fifty-three thousand, eight hundred ninety-three".