1454589721 has 8 divisors (see below), whose sum is σ = 1568725704. Its totient is φ = 1340774400.

The previous prime is 1454589679. The next prime is 1454589727. The reversal of 1454589721 is 1279854541.

It can be written as a sum of positive squares in 4 ways, for example, as 235225 + 1454354496 = 485^2 + 38136^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1454589721 - 2⁹ = 1454589209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1454589727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70696 + ... + 88921.

It is an arithmetic number, because the mean of its divisors is an integer number (196090713).

Almost surely, 2^1454589721 is an apocalyptic number.

It is an amenable number.

1454589721 is a deficient number, since it is larger than the sum of its proper divisors (114135983).

1454589721 is a wasteful number, since it uses less digits than its factorization.

1454589721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160331.

The product of its digits is 403200, while the sum is 46.

The square root of 1454589721 is about 38139.0839035234. The cubic root of 1454589721 is about 1133.0441637007.

The spelling of 1454589721 in words is "one billion, four hundred fifty-four million, five hundred eighty-nine thousand, seven hundred twenty-one".