396990135 has 48 divisors (see below), whose sum is σ = 723659040. Its totient is φ = 201035520.

The previous prime is 396990127. The next prime is 396990149. The reversal of 396990135 is 531099693.

It is not a de Polignac number, because 396990135 - 2³ = 396990127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77112 + ... + 82098.

It is an arithmetic number, because the mean of its divisors is an integer number (15076230).

Almost surely, 2^396990135 is an apocalyptic number.

396990135 is a deficient number, since it is larger than the sum of its proper divisors (326668905).

396990135 is a wasteful number, since it uses less digits than its factorization.

396990135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088 (or 5085 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 45.

The square root of 396990135 is about 19924.6112885547. The cubic root of 396990135 is about 734.9535719667.

The spelling of 396990135 in words is "three hundred ninety-six million, nine hundred ninety thousand, one hundred thirty-five".