997000022 has 4 divisors (see below), whose sum is σ = 1495500036. Its totient is φ = 498500010.

The previous prime is 997000007. The next prime is 997000051. The reversal of 997000022 is 220000799.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249250004 + ... + 249250007.

It is an arithmetic number, because the mean of its divisors is an integer number (373875009).

Almost surely, 2^997000022 is an apocalyptic number.

997000022 is a deficient number, since it is larger than the sum of its proper divisors (498500014).

997000022 is a wasteful number, since it uses less digits than its factorization.

997000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498500013.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 997000022 is about 31575.3071560674. The cubic root of 997000022 is about 998.9990056780. Note that the first 3 decimals are identical.

The spelling of 997000022 in words is "nine hundred ninety-seven million, twenty-two", and thus it is an aban number.