1940429 has 4 divisors (see below), whose sum is σ = 1944960. Its totient is φ = 1935900.

The previous prime is 1940423. The next prime is 1940437. The reversal of 1940429 is 9240491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1940429 - 2⁸ = 1940173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547 + ... + 2504.

It is an arithmetic number, because the mean of its divisors is an integer number (486240).

2^1940429 is an apocalyptic number.

It is an amenable number.

1940429 is a deficient number, since it is larger than the sum of its proper divisors (4531).

1940429 is an equidigital number, since it uses as much as digits as its factorization.

1940429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1940429 is about 1392.9928212306. The cubic root of 1940429 is about 124.7285630023.

The spelling of 1940429 in words is "one million, nine hundred forty thousand, four hundred twenty-nine".