974550397 has 2 divisors, whose sum is σ = 974550398. Its totient is φ = 974550396.

The previous prime is 974550389. The next prime is 974550433. The reversal of 974550397 is 793055479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837870916 + 136679481 = 28946^2 + 11691^2 .

It is a cyclic number.

It is not a de Polignac number, because 974550397 - 2³ = 974550389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 974550397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974550097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487275198 + 487275199.

It is an arithmetic number, because the mean of its divisors is an integer number (487275199).

Almost surely, 2^974550397 is an apocalyptic number.

It is an amenable number.

974550397 is a deficient number, since it is larger than the sum of its proper divisors (1).

974550397 is an equidigital number, since it uses as much as digits as its factorization.

974550397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1190700, while the sum is 49.

The square root of 974550397 is about 31217.7897519988. The cubic root of 974550397 is about 991.4437992240.

The spelling of 974550397 in words is "nine hundred seventy-four million, five hundred fifty thousand, three hundred ninety-seven".