397245322730 has 8 divisors (see below), whose sum is σ = 715041580932. Its totient is φ = 158898129088.

The previous prime is 397245322673. The next prime is 397245322739. The reversal of 397245322730 is 37223542793.

It can be written as a sum of positive squares in 2 ways, for example, as 387305830921 + 9939491809 = 622339^2 + 99697^2 .

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

It is not an unprimeable number, because it can be changed into a prime (397245322739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19862266127 + ... + 19862266146.

Almost surely, 2^397245322730 is an apocalyptic number.

397245322730 is a deficient number, since it is larger than the sum of its proper divisors (317796258202).

397245322730 is a wasteful number, since it uses less digits than its factorization.

397245322730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39724532280.

The product of its (nonzero) digits is 1905120, while the sum is 47.

The spelling of 397245322730 in words is "three hundred ninety-seven billion, two hundred forty-five million, three hundred twenty-two thousand, seven hundred thirty".