997464739 has 2 divisors, whose sum is σ = 997464740. Its totient is φ = 997464738.

The previous prime is 997464733. The next prime is 997464761. The reversal of 997464739 is 937464799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997464739 - 2¹¹ = 997462691 is a prime.

It is not a weakly prime, because it can be changed into another prime (997464733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498732369 + 498732370.

It is an arithmetic number, because the mean of its divisors is an integer number (498732370).

Almost surely, 2^997464739 is an apocalyptic number.

997464739 is a deficient number, since it is larger than the sum of its proper divisors (1).

997464739 is an equidigital number, since it uses as much as digits as its factorization.

997464739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 58.

The square root of 997464739 is about 31582.6651661952. The cubic root of 997464739 is about 999.1541978204.

The spelling of 997464739 in words is "nine hundred ninety-seven million, four hundred sixty-four thousand, seven hundred thirty-nine".