9901571429 has 8 divisors (see below), whose sum is σ = 10167909312. Its totient is φ = 9636873120.

The previous prime is 9901571363. The next prime is 9901571437. The reversal of 9901571429 is 9241751099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9901571429 - 2²⁸ = 9633135973 is a prime.

It is a super-2 number, since 2×9901571429² (a number of 21 digits) 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 (9901571929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397649 + ... + 421814.

It is an arithmetic number, because the mean of its divisors is an integer number (1270988664).

Almost surely, 2^9901571429 is an apocalyptic number.

It is an amenable number.

9901571429 is a deficient number, since it is larger than the sum of its proper divisors (266337883).

9901571429 is a wasteful number, since it uses less digits than its factorization.

9901571429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819787.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 9901571429 is about 99506.6401251695. The cubic root of 9901571429 is about 2147.3427730483.

The spelling of 9901571429 in words is "nine billion, nine hundred one million, five hundred seventy-one thousand, four hundred twenty-nine".