407220247 has 16 divisors (see below), whose sum is σ = 484687872. Its totient is φ = 334776960.

The previous prime is 407220211. The next prime is 407220257. The reversal of 407220247 is 742022704.

It is not a de Polignac number, because 407220247 - 2⁷ = 407220119 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 (407220257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16218 + ... + 32824.

It is an arithmetic number, because the mean of its divisors is an integer number (30292992).

Almost surely, 2^407220247 is an apocalyptic number.

407220247 is a deficient number, since it is larger than the sum of its proper divisors (77467625).

407220247 is a wasteful number, since it uses less digits than its factorization.

407220247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16758.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 407220247 is about 20179.6988827881. The cubic root of 407220247 is about 741.2131591904.

The spelling of 407220247 in words is "four hundred seven million, two hundred twenty thousand, two hundred forty-seven".