420797277 has 24 divisors (see below), whose sum is σ = 644492160. Its totient is φ = 263652480.

The previous prime is 420797261. The next prime is 420797291. The reversal of 420797277 is 772797024.

It is a happy number.

It is not a de Polignac number, because 420797277 - 2⁴ = 420797261 is a prime.

It is a super-2 number, since 2×420797277² = 354140696661229458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420797207) 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, 137874 + ... + 140892.

It is an arithmetic number, because the mean of its divisors is an integer number (26853840).

Almost surely, 2^420797277 is an apocalyptic number.

It is an amenable number.

420797277 is a deficient number, since it is larger than the sum of its proper divisors (223694883).

420797277 is a wasteful number, since it uses less digits than its factorization.

420797277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953 (or 3950 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 420797277 is about 20513.3438766087. The cubic root of 420797277 is about 749.3608047273.

The spelling of 420797277 in words is "four hundred twenty million, seven hundred ninety-seven thousand, two hundred seventy-seven".