101989454 has 16 divisors (see below), whose sum is σ = 184041600. Its totient is φ = 41409144.

The previous prime is 101989439. The next prime is 101989463. The reversal of 101989454 is 454989101.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191444 + ... + 191975.

It is an arithmetic number, because the mean of its divisors is an integer number (11502600).

Almost surely, 2^101989454 is an apocalyptic number.

101989454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

101989454 is a deficient number, since it is larger than the sum of its proper divisors (82052146).

101989454 is a wasteful number, since it uses less digits than its factorization.

101989454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383447.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 101989454 is about 10098.9828200666. The cubic root of 101989454 is about 467.2167695424.

The spelling of 101989454 in words is "one hundred one million, nine hundred eighty-nine thousand, four hundred fifty-four".