427620983 has 2 divisors, whose sum is σ = 427620984. Its totient is φ = 427620982.

The previous prime is 427620959. The next prime is 427620989. The reversal of 427620983 is 389026724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427620983 - 2¹² = 427616887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427620983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427620989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213810491 + 213810492.

It is an arithmetic number, because the mean of its divisors is an integer number (213810492).

Almost surely, 2^427620983 is an apocalyptic number.

427620983 is a deficient number, since it is larger than the sum of its proper divisors (1).

427620983 is an equidigital number, since it uses as much as digits as its factorization.

427620983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 427620983 is about 20678.9985976111. The cubic root of 427620983 is about 753.3896839401.

The spelling of 427620983 in words is "four hundred twenty-seven million, six hundred twenty thousand, nine hundred eighty-three".