100639497 has 16 divisors (see below), whose sum is σ = 153538560. Its totient is φ = 57439632.

The previous prime is 100639489. The next prime is 100639529. The reversal of 100639497 is 794936001.

It is not a de Polignac number, because 100639497 - 2³ = 100639489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100639477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19048 + ... + 23750.

It is an arithmetic number, because the mean of its divisors is an integer number (9596160).

Almost surely, 2^100639497 is an apocalyptic number.

It is an amenable number.

100639497 is a deficient number, since it is larger than the sum of its proper divisors (52899063).

100639497 is a wasteful number, since it uses less digits than its factorization.

100639497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 100639497 is about 10031.9238932520. The cubic root of 100639497 is about 465.1462090813.

The spelling of 100639497 in words is "one hundred million, six hundred thirty-nine thousand, four hundred ninety-seven".