997461471 has 4 divisors (see below), whose sum is σ = 1329948632. Its totient is φ = 664974312.

The previous prime is 997461433. The next prime is 997461473. The reversal of 997461471 is 174164799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174164799 = 3 ⋅58054933.

It is not a de Polignac number, because 997461471 - 2⁷ = 997461343 is a prime.

It is a super-3 number, since 3×997461471³ (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 self number, because there is not a number n which added to its sum of digits gives 997461471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997461473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166243576 + ... + 166243581.

It is an arithmetic number, because the mean of its divisors is an integer number (332487158).

Almost surely, 2^997461471 is an apocalyptic number.

997461471 is a deficient number, since it is larger than the sum of its proper divisors (332487161).

997461471 is a wasteful number, since it uses less digits than its factorization.

997461471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332487160.

The product of its digits is 381024, while the sum is 48.

The square root of 997461471 is about 31582.6134289105. The cubic root of 997461471 is about 999.1531066408.

The spelling of 997461471 in words is "nine hundred ninety-seven million, four hundred sixty-one thousand, four hundred seventy-one".