406240461 has 32 divisors (see below), whose sum is σ = 677744640. Its totient is φ = 238258800.

The previous prime is 406240453. The next prime is 406240469. The reversal of 406240461 is 164042604.

It is an interprime number because it is at equal distance from previous prime (406240453) and next prime (406240469).

It is not a de Polignac number, because 406240461 - 2³ = 406240453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406240469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12855 + ... + 31268.

It is an arithmetic number, because the mean of its divisors is an integer number (21179520).

Almost surely, 2^406240461 is an apocalyptic number.

It is an amenable number.

406240461 is a deficient number, since it is larger than the sum of its proper divisors (271504179).

406240461 is a wasteful number, since it uses less digits than its factorization.

406240461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44174 (or 44168 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 406240461 is about 20155.4077358906. The cubic root of 406240461 is about 740.6182202872.

The spelling of 406240461 in words is "four hundred six million, two hundred forty thousand, four hundred sixty-one".