406693497 has 32 divisors (see below), whose sum is σ = 630784000. Its totient is φ = 228287808.

The previous prime is 406693493. The next prime is 406693519. The reversal of 406693497 is 794396604.

It is not a de Polignac number, because 406693497 - 2² = 406693493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406693493) 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, 290004 + ... + 291402.

It is an arithmetic number, because the mean of its divisors is an integer number (19712000).

Almost surely, 2^406693497 is an apocalyptic number.

It is an amenable number.

406693497 is a deficient number, since it is larger than the sum of its proper divisors (224090503).

406693497 is a wasteful number, since it uses less digits than its factorization.

406693497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645.

The product of its (nonzero) digits is 979776, while the sum is 48.

The square root of 406693497 is about 20166.6431762949. The cubic root of 406693497 is about 740.8934284459.

The spelling of 406693497 in words is "four hundred six million, six hundred ninety-three thousand, four hundred ninety-seven".