890452729 has 4 divisors (see below), whose sum is σ = 911160976. Its totient is φ = 869744484.

The previous prime is 890452709. The next prime is 890452733. The reversal of 890452729 is 927254098.

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: 927254098 = 2 ⋅463627049.

It is a cyclic number.

It is not a de Polignac number, because 890452729 - 2⁹ = 890452217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890452709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10354059 + ... + 10354144.

It is an arithmetic number, because the mean of its divisors is an integer number (227790244).

Almost surely, 2^890452729 is an apocalyptic number.

It is an amenable number.

890452729 is a deficient number, since it is larger than the sum of its proper divisors (20708247).

890452729 is a wasteful number, since it uses less digits than its factorization.

890452729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20708246.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 890452729 is about 29840.4545709344. The cubic root of 890452729 is about 962.0632451219.

The spelling of 890452729 in words is "eight hundred ninety million, four hundred fifty-two thousand, seven hundred twenty-nine".