398056429 has 4 divisors (see below), whose sum is σ = 398661120. Its totient is φ = 397451740.

The previous prime is 398056409. The next prime is 398056433. The reversal of 398056429 is 924650893.

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 398056429 - 2¹³ = 398048237 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 (398056409) 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, 301357 + ... + 302674.

It is an arithmetic number, because the mean of its divisors is an integer number (99665280).

Almost surely, 2^398056429 is an apocalyptic number.

It is an amenable number.

398056429 is a deficient number, since it is larger than the sum of its proper divisors (604691).

398056429 is an equidigital number, since it uses as much as digits as its factorization.

398056429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604690.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 398056429 is about 19951.3515582278. The cubic root of 398056429 is about 735.6109988752.

The spelling of 398056429 in words is "three hundred ninety-eight million, fifty-six thousand, four hundred twenty-nine".