297621946 has 4 divisors (see below), whose sum is σ = 446432922. Its totient is φ = 148810972.

The previous prime is 297621943. The next prime is 297621991. The reversal of 297621946 is 649126792.

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

It can be written as a sum of positive squares in only one way, i.e., 173054025 + 124567921 = 13155^2 + 11161^2 .

It is a junction number, because it is equal to n+sod(n) for n = 297621896 and 297621905.

It is not an unprimeable number, because it can be changed into a prime (297621943) 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 as a sum of consecutive naturals, namely, 74405485 + ... + 74405488.

Almost surely, 2^297621946 is an apocalyptic number.

297621946 is a deficient number, since it is larger than the sum of its proper divisors (148810976).

297621946 is a wasteful number, since it uses less digits than its factorization.

297621946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148810975.

The product of its digits is 326592, while the sum is 46.

The square root of 297621946 is about 17251.7229864150. The cubic root of 297621946 is about 667.6594248574.

The spelling of 297621946 in words is "two hundred ninety-seven million, six hundred twenty-one thousand, nine hundred forty-six".