167421477 has 4 divisors (see below), whose sum is σ = 223228640. Its totient is φ = 111614316.

The previous prime is 167421431. The next prime is 167421481. The reversal of 167421477 is 774124761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 167421477 - 2⁶ = 167421413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167421497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27903577 + ... + 27903582.

It is an arithmetic number, because the mean of its divisors is an integer number (55807160).

Almost surely, 2^167421477 is an apocalyptic number.

It is an amenable number.

167421477 is a deficient number, since it is larger than the sum of its proper divisors (55807163).

167421477 is an equidigital number, since it uses as much as digits as its factorization.

167421477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55807162.

The product of its digits is 65856, while the sum is 39.

The square root of 167421477 is about 12939.1451417781. The cubic root of 167421477 is about 551.1507334072.

The spelling of 167421477 in words is "one hundred sixty-seven million, four hundred twenty-one thousand, four hundred seventy-seven".