1453039921 has 24 divisors (see below), whose sum is σ = 1543401216. Its totient is φ = 1366928640.

The previous prime is 1453039901. The next prime is 1453039933. The reversal of 1453039921 is 1299303541.

It is not a de Polignac number, because 1453039921 - 2²⁵ = 1419485489 is a prime.

It is a super-2 number, since 2×1453039921² = 4222650024039372482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1453039901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14979745 + ... + 14979841.

It is an arithmetic number, because the mean of its divisors is an integer number (64308384).

Almost surely, 2^1453039921 is an apocalyptic number.

It is an amenable number.

1453039921 is a deficient number, since it is larger than the sum of its proper divisors (90361295).

1453039921 is an frugal number, since it uses more digits than its factorization.

1453039921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 1453039921 is about 38118.7607484818. The cubic root of 1453039921 is about 1132.6416181507.

The spelling of 1453039921 in words is "one billion, four hundred fifty-three million, thirty-nine thousand, nine hundred twenty-one".