157409999 has 8 divisors (see below), whose sum is σ = 169918560. Its totient is φ = 145373536.

The previous prime is 157409983. The next prime is 157410013. The reversal of 157409999 is 999904751.

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 157409999 - 2⁴ = 157409983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157409999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157409899) 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, 117332 + ... + 118665.

It is an arithmetic number, because the mean of its divisors is an integer number (21239820).

Almost surely, 2^157409999 is an apocalyptic number.

157409999 is a deficient number, since it is larger than the sum of its proper divisors (12508561).

157409999 is a wasteful number, since it uses less digits than its factorization.

157409999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236049.

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 157409999 is about 12546.3141599435. The cubic root of 157409999 is about 539.9382634039.

The spelling of 157409999 in words is "one hundred fifty-seven million, four hundred nine thousand, nine hundred ninety-nine".