11701397929 has 27 divisors (see below), whose sum is σ = 12997106703. Its totient is φ = 10529992512.

The previous prime is 11701397899. The next prime is 11701397987. The reversal of 11701397929 is 92979310711.

The square root of 11701397929 is 108173.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 9839648025 + 1861749904 = 99195^2 + 43148^2 .

It is not a de Polignac number, because 11701397929 - 2¹³ = 11701389737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11701097929) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 74531119 + ... + 74531275.

Almost surely, 2^11701397929 is an apocalyptic number.

11701397929 is the 108173-rd square number.

11701397929 is the 54087-th centered octagonal number.

It is an amenable number.

11701397929 is a deficient number, since it is larger than the sum of its proper divisors (1295708774).

11701397929 is an frugal number, since it uses more digits than its factorization.

11701397929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 49.

Multiplying 11701397929 by its sum of digits (49), we get a square (573368498521 = 757211²).

The spelling of 11701397929 in words is "eleven billion, seven hundred one million, three hundred ninety-seven thousand, nine hundred twenty-nine".