421343949 has 16 divisors (see below), whose sum is σ = 605392704. Its totient is φ = 259123200.

The previous prime is 421343947. The next prime is 421343953. The reversal of 421343949 is 949343124.

It is not a de Polignac number, because 421343949 - 2¹ = 421343947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421343941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91789 + ... + 96269.

It is an arithmetic number, because the mean of its divisors is an integer number (37837044).

Almost surely, 2^421343949 is an apocalyptic number.

It is an amenable number.

421343949 is a deficient number, since it is larger than the sum of its proper divisors (184048755).

421343949 is a wasteful number, since it uses less digits than its factorization.

421343949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6908.

The product of its digits is 93312, while the sum is 39.

The square root of 421343949 is about 20526.6643417775. The cubic root of 421343949 is about 749.6851709732.

The spelling of 421343949 in words is "four hundred twenty-one million, three hundred forty-three thousand, nine hundred forty-nine".