897731929 has 8 divisors (see below), whose sum is σ = 937941120. Its totient is φ = 857620896.

The previous prime is 897731921. The next prime is 897731951. The reversal of 897731929 is 929137798.

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

It is a cyclic number.

It is not a de Polignac number, because 897731929 - 2³ = 897731921 is a prime.

It is a super-2 number, since 2×897731929² = 1611845232692122082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 897731929.

It is not an unprimeable number, because it can be changed into a prime (897731921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5517 + ... + 42730.

It is an arithmetic number, because the mean of its divisors is an integer number (117242640).

Almost surely, 2^897731929 is an apocalyptic number.

It is an amenable number.

897731929 is a deficient number, since it is larger than the sum of its proper divisors (40209191).

897731929 is a wasteful number, since it uses less digits than its factorization.

897731929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49079.

The product of its digits is 1714608, while the sum is 55.

The square root of 897731929 is about 29962.1749711198. The cubic root of 897731929 is about 964.6776658864.

The spelling of 897731929 in words is "eight hundred ninety-seven million, seven hundred thirty-one thousand, nine hundred twenty-nine".