78276299 has 6 divisors (see below), whose sum is σ = 78975996. Its totient is φ = 77578280.

The previous prime is 78276287. The next prime is 78276311. The reversal of 78276299 is 99267287.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78276287) and next prime (78276311).

It is not a de Polignac number, because 78276299 - 2¹² = 78272203 is a prime.

It is a super-2 number, since 2×78276299² = 12254357970274802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78276229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100877 + ... + 101649.

It is an arithmetic number, because the mean of its divisors is an integer number (13162666).

Almost surely, 2^78276299 is an apocalyptic number.

78276299 is a deficient number, since it is larger than the sum of its proper divisors (699697).

78276299 is an frugal number, since it uses more digits than its factorization.

78276299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677 (or 904 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 78276299 is about 8847.3893889667. The cubic root of 78276299 is about 427.7697742073.

The spelling of 78276299 in words is "seventy-eight million, two hundred seventy-six thousand, two hundred ninety-nine".