40292397 has 40 divisors (see below), whose sum is σ = 65993400. Its totient is φ = 24385536.

The previous prime is 40292383. The next prime is 40292411. The reversal of 40292397 is 79329204.

It is an interprime number because it is at equal distance from previous prime (40292383) and next prime (40292411).

It can be written as a sum of positive squares in 4 ways, for example, as 7733961 + 32558436 = 2781^2 + 5706^2 .

It is not a de Polignac number, because 40292397 - 2¹⁰ = 40291373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40292327) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39429 + ... + 40437.

It is an arithmetic number, because the mean of its divisors is an integer number (1649835).

Almost surely, 2^40292397 is an apocalyptic number.

It is an amenable number.

40292397 is a deficient number, since it is larger than the sum of its proper divisors (25701003).

40292397 is a wasteful number, since it uses less digits than its factorization.

40292397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 40292397 is about 6347.6292424810. The cubic root of 40292397 is about 342.8264867679.

The spelling of 40292397 in words is "forty million, two hundred ninety-two thousand, three hundred ninety-seven".