915485047 has 2 divisors, whose sum is σ = 915485048. Its totient is φ = 915485046.

The previous prime is 915484991. The next prime is 915485057. The reversal of 915485047 is 740584519.

It is a strong prime.

It is an emirp because it is prime and its reverse (740584519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 915485047 - 2⁷ = 915484919 is a prime.

It is a super-2 number, since 2×915485047² = 1676225742561184418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 915484994 and 915485012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (915485057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457742523 + 457742524.

It is an arithmetic number, because the mean of its divisors is an integer number (457742524).

Almost surely, 2^915485047 is an apocalyptic number.

915485047 is a deficient number, since it is larger than the sum of its proper divisors (1).

915485047 is an equidigital number, since it uses as much as digits as its factorization.

915485047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 915485047 is about 30256.9834418436. The cubic root of 915485047 is about 970.9952045407.

The spelling of 915485047 in words is "nine hundred fifteen million, four hundred eighty-five thousand, forty-seven".