407402090 has 8 divisors (see below), whose sum is σ = 733323780. Its totient is φ = 162960832.

The previous prime is 407402089. The next prime is 407402101. The reversal of 407402090 is 90204704.

It can be written as a sum of positive squares in 2 ways, for example, as 348158281 + 59243809 = 18659^2 + 7697^2 .

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

It is an unprimeable number.

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, 20370095 + ... + 20370114.

Almost surely, 2^407402090 is an apocalyptic number.

407402090 is a deficient number, since it is larger than the sum of its proper divisors (325921690).

407402090 is a wasteful number, since it uses less digits than its factorization.

407402090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40740216.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 407402090 is about 20184.2039724137. The cubic root of 407402090 is about 741.3234716220.

Adding to 407402090 its reverse (90204704), we get a palindrome (497606794).

The spelling of 407402090 in words is "four hundred seven million, four hundred two thousand, ninety".