47749026397 has 2 divisors, whose sum is σ = 47749026398. Its totient is φ = 47749026396.

The previous prime is 47749026371. The next prime is 47749026401. The reversal of 47749026397 is 79362094774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27223020036 + 20526006361 = 164994^2 + 143269^2 .

It is a cyclic number.

It is not a de Polignac number, because 47749026397 - 2¹⁵ = 47748993629 is a prime.

It is a super-2 number, since 2×47749026397² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47749026317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23874513198 + 23874513199.

It is an arithmetic number, because the mean of its divisors is an integer number (23874513199).

Almost surely, 2^47749026397 is an apocalyptic number.

It is an amenable number.

47749026397 is a deficient number, since it is larger than the sum of its proper divisors (1).

47749026397 is an equidigital number, since it uses as much as digits as its factorization.

47749026397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16003008, while the sum is 58.

The spelling of 47749026397 in words is "forty-seven billion, seven hundred forty-nine million, twenty-six thousand, three hundred ninety-seven".