407490018421 has 4 divisors (see below), whose sum is σ = 412648120000. Its totient is φ = 402331916844.

The previous prime is 407490018407. The next prime is 407490018443. The reversal of 407490018421 is 124810094704.

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 407490018421 - 2¹³ = 407490010229 is a prime.

It is a super-2 number, since 2×407490018421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407490018721) 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, 2579050671 + ... + 2579050828.

It is an arithmetic number, because the mean of its divisors is an integer number (103162030000).

Almost surely, 2^407490018421 is an apocalyptic number.

It is an amenable number.

407490018421 is a deficient number, since it is larger than the sum of its proper divisors (5158101579).

407490018421 is an equidigital number, since it uses as much as digits as its factorization.

407490018421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158101578.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 407490018421 in words is "four hundred seven billion, four hundred ninety million, eighteen thousand, four hundred twenty-one".