1077447509 has 4 divisors (see below), whose sum is σ = 1077770316. Its totient is φ = 1077124704.

The previous prime is 1077447499. The next prime is 1077447523. The reversal of 1077447509 is 9057447701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9057447701 = 2339 ⋅3872359.

It can be written as a sum of positive squares in 2 ways, for example, as 921122500 + 156325009 = 30350^2 + 12503^2 .

It is a cyclic number.

It is not a de Polignac number, because 1077447509 - 2⁴ = 1077447493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1077447509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1077447529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156344 + ... + 163089.

It is an arithmetic number, because the mean of its divisors is an integer number (269442579).

Almost surely, 2^1077447509 is an apocalyptic number.

It is an amenable number.

1077447509 is a deficient number, since it is larger than the sum of its proper divisors (322807).

1077447509 is an equidigital number, since it uses as much as digits as its factorization.

1077447509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322806.

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 1077447509 is about 32824.4955635269. The cubic root of 1077447509 is about 1025.1766529558.

The spelling of 1077447509 in words is "one billion, seventy-seven million, four hundred forty-seven thousand, five hundred nine".