854972797 has 4 divisors (see below), whose sum is σ = 977111776. Its totient is φ = 732833820.

The previous prime is 854972771. The next prime is 854972831. The reversal of 854972797 is 797279458.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-854972797 is a prime.

It is a super-3 number, since 3×854972797³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854972197) 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, 61069479 + ... + 61069492.

It is an arithmetic number, because the mean of its divisors is an integer number (244277944).

Almost surely, 2^854972797 is an apocalyptic number.

It is an amenable number.

854972797 is a deficient number, since it is larger than the sum of its proper divisors (122138979).

854972797 is a wasteful number, since it uses less digits than its factorization.

854972797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122138978.

The product of its digits is 8890560, while the sum is 58.

The square root of 854972797 is about 29239.9178692417. The cubic root of 854972797 is about 949.1119298226. Note that the first 3 decimals are identical.

The spelling of 854972797 in words is "eight hundred fifty-four million, nine hundred seventy-two thousand, seven hundred ninety-seven".