78762949 has 2 divisors, whose sum is σ = 78762950. Its totient is φ = 78762948.

The previous prime is 78762917. The next prime is 78762979. The reversal of 78762949 is 94926787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78588225 + 174724 = 8865^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 78762949 - 2⁵ = 78762917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78762896 and 78762905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78762979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39381474 + 39381475.

It is an arithmetic number, because the mean of its divisors is an integer number (39381475).

Almost surely, 2^78762949 is an apocalyptic number.

It is an amenable number.

78762949 is a deficient number, since it is larger than the sum of its proper divisors (1).

78762949 is an equidigital number, since it uses as much as digits as its factorization.

78762949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 78762949 is about 8874.8492381561. The cubic root of 78762949 is about 428.6544363396.

It can be divided in two parts, 787 and 62949, that added together give a palindrome (63736).

The spelling of 78762949 in words is "seventy-eight million, seven hundred sixty-two thousand, nine hundred forty-nine".