406667377 has 4 divisors (see below), whose sum is σ = 420690420. Its totient is φ = 392644336.

The previous prime is 406667351. The next prime is 406667411. The reversal of 406667377 is 773766604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 339443776 + 67223601 = 18424^2 + 8199^2 .

It is a cyclic number.

It is not a de Polignac number, because 406667377 - 2¹⁵ = 406634609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406661377) 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, 7011478 + ... + 7011535.

It is an arithmetic number, because the mean of its divisors is an integer number (105172605).

Almost surely, 2^406667377 is an apocalyptic number.

It is an amenable number.

406667377 is a deficient number, since it is larger than the sum of its proper divisors (14023043).

406667377 is a wasteful number, since it uses less digits than its factorization.

406667377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14023042.

The product of its (nonzero) digits is 889056, while the sum is 46.

The square root of 406667377 is about 20165.9955618363. The cubic root of 406667377 is about 740.8775667459.

It can be divided in two parts, 406667 and 377, that added together give a square (407044 = 638²).

The spelling of 406667377 in words is "four hundred six million, six hundred sixty-seven thousand, three hundred seventy-seven".