997053389 has 2 divisors, whose sum is σ = 997053390. Its totient is φ = 997053388.

The previous prime is 997053377. The next prime is 997053401. The reversal of 997053389 is 983350799.

It is a balanced prime because it is at equal distance from previous prime (997053377) and next prime (997053401).

It can be written as a sum of positive squares in only one way, i.e., 534072100 + 462981289 = 23110^2 + 21517^2 .

It is a cyclic number.

It is not a de Polignac number, because 997053389 - 2⁴ = 997053373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997053389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997059389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498526694 + 498526695.

It is an arithmetic number, because the mean of its divisors is an integer number (498526695).

Almost surely, 2^997053389 is an apocalyptic number.

It is an amenable number.

997053389 is a deficient number, since it is larger than the sum of its proper divisors (1).

997053389 is an equidigital number, since it uses as much as digits as its factorization.

997053389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 997053389 is about 31576.1522196736. The cubic root of 997053389 is about 999.0168300269.

The spelling of 997053389 in words is "nine hundred ninety-seven million, fifty-three thousand, three hundred eighty-nine".