1456640441 has 4 divisors (see below), whose sum is σ = 1456787712. Its totient is φ = 1456493172.

The previous prime is 1456640407. The next prime is 1456640477. The reversal of 1456640441 is 1440466541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1440466541 = 16421 ⋅87721.

It is a cyclic number.

It is not a de Polignac number, because 1456640441 - 2¹⁰ = 1456639417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1456640401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57641 + ... + 78966.

It is an arithmetic number, because the mean of its divisors is an integer number (364196928).

Almost surely, 2^1456640441 is an apocalyptic number.

It is an amenable number.

1456640441 is a deficient number, since it is larger than the sum of its proper divisors (147271).

1456640441 is a wasteful number, since it uses less digits than its factorization.

1456640441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147270.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 1456640441 is about 38165.9591914051. The cubic root of 1456640441 is about 1133.5763791222.

The spelling of 1456640441 in words is "one billion, four hundred fifty-six million, six hundred forty thousand, four hundred forty-one".