406990337 has 8 divisors (see below), whose sum is σ = 439075560. Its totient is φ = 375016320.

The previous prime is 406990333. The next prime is 406990349. The reversal of 406990337 is 733099604.

It can be written as a sum of positive squares in 4 ways, for example, as 4145296 + 402845041 = 2036^2 + 20071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406990337 - 2² = 406990333 is a prime.

It is a super-2 number, since 2×406990337² = 331282268822747138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406990294 and 406990303.

It is not an unprimeable number, because it can be changed into a prime (406990333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20114 + ... + 34907.

It is an arithmetic number, because the mean of its divisors is an integer number (54884445).

Almost surely, 2^406990337 is an apocalyptic number.

It is an amenable number.

406990337 is a deficient number, since it is larger than the sum of its proper divisors (32085223).

406990337 is a wasteful number, since it uses less digits than its factorization.

406990337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55603.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 406990337 is about 20174.0015118469. The cubic root of 406990337 is about 741.0736405888.

The spelling of 406990337 in words is "four hundred six million, nine hundred ninety thousand, three hundred thirty-seven".