1452706397 has 4 divisors (see below), whose sum is σ = 1453558140. Its totient is φ = 1451854656.

The previous prime is 1452706393. The next prime is 1452706433. The reversal of 1452706397 is 7936072541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7936072541 = 3581 ⋅2216161.

It can be written as a sum of positive squares in 2 ways, for example, as 214651801 + 1238054596 = 14651^2 + 35186^2 .

It is a cyclic number.

It is not a de Polignac number, because 1452706397 - 2² = 1452706393 is a prime.

It is a super-2 number, since 2×1452706397² = 4220711751769443218, which contains 22 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 (1452706393) 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, 423308 + ... + 426725.

It is an arithmetic number, because the mean of its divisors is an integer number (363389535).

Almost surely, 2^1452706397 is an apocalyptic number.

It is an amenable number.

1452706397 is a deficient number, since it is larger than the sum of its proper divisors (851743).

1452706397 is an equidigital number, since it uses as much as digits as its factorization.

1452706397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851742.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 1452706397 is about 38114.3856962171. The cubic root of 1452706397 is about 1132.5549510962.

The spelling of 1452706397 in words is "one billion, four hundred fifty-two million, seven hundred six thousand, three hundred ninety-seven".