5403721397 has 2 divisors, whose sum is σ = 5403721398. Its totient is φ = 5403721396.

The previous prime is 5403721387. The next prime is 5403721447. The reversal of 5403721397 is 7931273045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3156866596 + 2246854801 = 56186^2 + 47401^2 .

It is a cyclic number.

It is not a de Polignac number, because 5403721397 - 2⁴ = 5403721381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5403721387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2701860698 + 2701860699.

It is an arithmetic number, because the mean of its divisors is an integer number (2701860699).

Almost surely, 2^5403721397 is an apocalyptic number.

It is an amenable number.

5403721397 is a deficient number, since it is larger than the sum of its proper divisors (1).

5403721397 is an equidigital number, since it uses as much as digits as its factorization.

5403721397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 5403721397 is about 73510.0088219285. The cubic root of 5403721397 is about 1754.8135663410.

The spelling of 5403721397 in words is "five billion, four hundred three million, seven hundred twenty-one thousand, three hundred ninety-seven".