406988461 has 6 divisors (see below), whose sum is σ = 447351086. Its totient is φ = 369989400.

The previous prime is 406988459. The next prime is 406988471. The reversal of 406988461 is 164889604.

It can be written as a sum of positive squares in only one way, i.e., 405216900 + 1771561 = 20130^2 + 1331^2 .

It is not a de Polignac number, because 406988461 - 2¹ = 406988459 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 (406988441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1681650 + ... + 1681891.

Almost surely, 2^406988461 is an apocalyptic number.

It is an amenable number.

406988461 is a deficient number, since it is larger than the sum of its proper divisors (40362625).

406988461 is a wasteful number, since it uses less digits than its factorization.

406988461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363563 (or 3363552 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 406988461 is about 20173.9550163075. The cubic root of 406988461 is about 741.0725019407.

The spelling of 406988461 in words is "four hundred six million, nine hundred eighty-eight thousand, four hundred sixty-one".