447270779 has 2 divisors, whose sum is σ = 447270780. Its totient is φ = 447270778.

The previous prime is 447270767. The next prime is 447270787. The reversal of 447270779 is 977072744.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 447270779 - 2¹⁶ = 447205243 is a prime.

It is a super-2 number, since 2×447270779² = 400102299494533682, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (447270739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223635389 + 223635390.

It is an arithmetic number, because the mean of its divisors is an integer number (223635390).

Almost surely, 2^447270779 is an apocalyptic number.

447270779 is a deficient number, since it is larger than the sum of its proper divisors (1).

447270779 is an equidigital number, since it uses as much as digits as its factorization.

447270779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691488, while the sum is 47.

The square root of 447270779 is about 21148.7772459781. Note that the first 3 decimals coincide. The cubic root of 447270779 is about 764.7570840791.

The spelling of 447270779 in words is "four hundred forty-seven million, two hundred seventy thousand, seven hundred seventy-nine".