802621399 has 2 divisors, whose sum is σ = 802621400. Its totient is φ = 802621398.

The previous prime is 802621367. The next prime is 802621439. The reversal of 802621399 is 993126208.

It is a happy number.

It is an a-pointer prime, because the next prime (802621439) can be obtained adding 802621399 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 802621399 - 2⁵ = 802621367 is a prime.

It is a super-2 number, since 2×802621399² = 1288402220265434402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (802621999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401310699 + 401310700.

It is an arithmetic number, because the mean of its divisors is an integer number (401310700).

Almost surely, 2^802621399 is an apocalyptic number.

802621399 is a deficient number, since it is larger than the sum of its proper divisors (1).

802621399 is an equidigital number, since it uses as much as digits as its factorization.

802621399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 802621399 is about 28330.5735734383. The cubic root of 802621399 is about 929.3306159366.

The spelling of 802621399 in words is "eight hundred two million, six hundred twenty-one thousand, three hundred ninety-nine".