157729469 has 24 divisors (see below), whose sum is σ = 177952320. Its totient is φ = 139138560.

The previous prime is 157729459. The next prime is 157729471. The reversal of 157729469 is 964927751.

It is a de Polignac number, because none of the positive numbers 2^k-157729469 is a prime.

It is a super-2 number, since 2×157729469² = 49757170782043922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157729459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1626029 + ... + 1626125.

It is an arithmetic number, because the mean of its divisors is an integer number (7414680).

Almost surely, 2^157729469 is an apocalyptic number.

157729469 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

157729469 is a deficient number, since it is larger than the sum of its proper divisors (20222851).

157729469 is an equidigital number, since it uses as much as digits as its factorization.

157729469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 200 counting only the distinct ones).

The product of its digits is 952560, while the sum is 50.

The square root of 157729469 is about 12559.0393342803. The cubic root of 157729469 is about 540.3032921292.

The spelling of 157729469 in words is "one hundred fifty-seven million, seven hundred twenty-nine thousand, four hundred sixty-nine".