1405930 has 8 divisors (see below), whose sum is σ = 2530692. Its totient is φ = 562368.

The previous prime is 1405927. The next prime is 1405939. The reversal of 1405930 is 395041.

It can be written as a sum of positive squares in 2 ways, for example, as 1352569 + 53361 = 1163^2 + 231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1405939) 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 3 ways as a sum of consecutive naturals, for example, 70287 + ... + 70306.

2^1405930 is an apocalyptic number.

1405930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1405930 is a deficient number, since it is larger than the sum of its proper divisors (1124762).

1405930 is a wasteful number, since it uses less digits than its factorization.

1405930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140600.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1405930 is about 1185.7191910398. The cubic root of 1405930 is about 112.0266199480.

The spelling of 1405930 in words is "one million, four hundred five thousand, nine hundred thirty".