407381990 has 16 divisors (see below), whose sum is σ = 737130240. Its totient is φ = 162098880.

The previous prime is 407381987. The next prime is 407381993. The reversal of 407381990 is 99183704.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (407381987) and next prime (407381993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407381993) 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 7 ways as a sum of consecutive naturals, for example, 104735 + ... + 108554.

It is an arithmetic number, because the mean of its divisors is an integer number (46070640).

Almost surely, 2^407381990 is an apocalyptic number.

407381990 is a deficient number, since it is larger than the sum of its proper divisors (329748250).

407381990 is a wasteful number, since it uses less digits than its factorization.

407381990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213487.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 407381990 is about 20183.7060521600. The cubic root of 407381990 is about 741.3112798609.

The spelling of 407381990 in words is "four hundred seven million, three hundred eighty-one thousand, nine hundred ninety".