1339747669 has 12 divisors (see below), whose sum is σ = 1451848800. Its totient is φ = 1235739024.

The previous prime is 1339747613. The next prime is 1339747681. The reversal of 1339747669 is 9667479331.

It is a happy number.

It is not a de Polignac number, because 1339747669 - 2²⁵ = 1306193237 is a prime.

It is a super-2 number, since 2×1339747669² = 3589847633181867122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339747609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315442 + ... + 319660.

It is an arithmetic number, because the mean of its divisors is an integer number (120987400).

Almost surely, 2^1339747669 is an apocalyptic number.

1339747669 is the 21133-rd hex number.

It is an amenable number.

1339747669 is a deficient number, since it is larger than the sum of its proper divisors (112101131).

1339747669 is a wasteful number, since it uses less digits than its factorization.

1339747669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124 (or 6111 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 55.

The square root of 1339747669 is about 36602.5636943644. The cubic root of 1339747669 is about 1102.4045660337.

The spelling of 1339747669 in words is "one billion, three hundred thirty-nine million, seven hundred forty-seven thousand, six hundred sixty-nine".