396969749 has 8 divisors (see below), whose sum is σ = 443620800. Its totient is φ = 352079200.

The previous prime is 396969739. The next prime is 396969757. The reversal of 396969749 is 947969693.

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

It is not a de Polignac number, because 396969749 - 2¹⁶ = 396904213 is a prime.

It is a super-2 number, since 2×396969749² = 315169963242246002, 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 = 396969691 and 396969700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396969709) 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, 439649 + ... + 440550.

It is an arithmetic number, because the mean of its divisors is an integer number (55452600).

Almost surely, 2^396969749 is an apocalyptic number.

It is an amenable number.

396969749 is a deficient number, since it is larger than the sum of its proper divisors (46651051).

396969749 is a wasteful number, since it uses less digits than its factorization.

396969749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880251.

The product of its digits is 19840464, while the sum is 62.

The square root of 396969749 is about 19924.0997036253. The cubic root of 396969749 is about 734.9409914526.

The spelling of 396969749 in words is "three hundred ninety-six million, nine hundred sixty-nine thousand, seven hundred forty-nine".