421298779 has 8 divisors (see below), whose sum is σ = 460116288. Its totient is φ = 382567560.

The previous prime is 421298767. The next prime is 421298783. The reversal of 421298779 is 977892124.

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 421298779 - 2²³ = 412910171 is a prime.

It is a super-2 number, since 2×421298779² = 354985322373781682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421298729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11137 + ... + 31090.

It is an arithmetic number, because the mean of its divisors is an integer number (57514536).

Almost surely, 2^421298779 is an apocalyptic number.

421298779 is a deficient number, since it is larger than the sum of its proper divisors (38817509).

421298779 is a wasteful number, since it uses less digits than its factorization.

421298779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43145.

The product of its digits is 508032, while the sum is 49.

The square root of 421298779 is about 20525.5640360990. The cubic root of 421298779 is about 749.6583801218.

The spelling of 421298779 in words is "four hundred twenty-one million, two hundred ninety-eight thousand, seven hundred seventy-nine".