1352399769 has 48 divisors (see below), whose sum is σ = 2310497280. Its totient is φ = 745943040.

The previous prime is 1352399749. The next prime is 1352399773. The reversal of 1352399769 is 9679932531.

It is a happy number.

It is not a de Polignac number, because 1352399769 - 2¹³ = 1352391577 is a prime.

It is a super-2 number, since 2×1352399769² = 3657970270382506722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1352399749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1110649 + ... + 1111865.

It is an arithmetic number, because the mean of its divisors is an integer number (48135360).

Almost surely, 2^1352399769 is an apocalyptic number.

It is an amenable number.

1352399769 is a deficient number, since it is larger than the sum of its proper divisors (958097511).

1352399769 is a wasteful number, since it uses less digits than its factorization.

1352399769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1827 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 54.

The square root of 1352399769 is about 36774.9883616569. The cubic root of 1352399769 is about 1105.8639378328.

The spelling of 1352399769 in words is "one billion, three hundred fifty-two million, three hundred ninety-nine thousand, seven hundred sixty-nine".