407542897 has 4 divisors (see below), whose sum is σ = 408288496. Its totient is φ = 406797300.

The previous prime is 407542879. The next prime is 407542939. The reversal of 407542897 is 798245704.

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 a de Polignac number, because none of the positive numbers 2^k-407542897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (407542097) 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, 371979 + ... + 373072.

It is an arithmetic number, because the mean of its divisors is an integer number (102072124).

Almost surely, 2^407542897 is an apocalyptic number.

It is an amenable number.

407542897 is a deficient number, since it is larger than the sum of its proper divisors (745599).

407542897 is an equidigital number, since it uses as much as digits as its factorization.

407542897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745598.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 407542897 is about 20187.6917204518. The cubic root of 407542897 is about 741.4088676089.

The spelling of 407542897 in words is "four hundred seven million, five hundred forty-two thousand, eight hundred ninety-seven".