172400937 has 8 divisors (see below), whose sum is σ = 231546336. Its totient is φ = 114094752.

The previous prime is 172400929. The next prime is 172400953. The reversal of 172400937 is 739004271.

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

It is not a de Polignac number, because 172400937 - 2³ = 172400929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172400898 and 172400907.

It is not an unprimeable number, because it can be changed into a prime (172400957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209323 + ... + 210144.

It is an arithmetic number, because the mean of its divisors is an integer number (28943292).

Almost surely, 2^172400937 is an apocalyptic number.

It is an amenable number.

172400937 is a deficient number, since it is larger than the sum of its proper divisors (59145399).

172400937 is a wasteful number, since it uses less digits than its factorization.

172400937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419607.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 172400937 is about 13130.1537310117. The cubic root of 172400937 is about 556.5615595515.

The spelling of 172400937 in words is "one hundred seventy-two million, four hundred thousand, nine hundred thirty-seven".