1454400021 has 8 divisors (see below), whose sum is σ = 1968143584. Its totient is φ = 955128240.

The previous prime is 1454399983. The next prime is 1454400037. The reversal of 1454400021 is 1200044541.

It is a happy number.

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

It is not a de Polignac number, because 1454400021 - 2⁷ = 1454399893 is a prime.

It is a super-3 number, since 3×1454400021³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1454400071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3617710 + ... + 3618111.

It is an arithmetic number, because the mean of its divisors is an integer number (246017948).

Almost surely, 2^1454400021 is an apocalyptic number.

It is an amenable number.

1454400021 is a deficient number, since it is larger than the sum of its proper divisors (513743563).

1454400021 is an equidigital number, since it uses as much as digits as its factorization.

1454400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235891.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1454400021 is about 38136.5968722958. The cubic root of 1454400021 is about 1132.9949063238.

Adding to 1454400021 its reverse (1200044541), we get a palindrome (2654444562).

The spelling of 1454400021 in words is "one billion, four hundred fifty-four million, four hundred thousand, twenty-one".