39469797 has 6 divisors (see below), whose sum is σ = 57011942. Its totient is φ = 26313192.

The previous prime is 39469769. The next prime is 39469799. The reversal of 39469797 is 79796493.

Added to its reverse (79796493) it gives a triangular number (119266290 = T₁₅₄₄₄).

It can be written as a sum of positive squares in only one way, i.e., 35034561 + 4435236 = 5919^2 + 2106^2 .

It is a de Polignac number, because none of the positive numbers 2^k-39469797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39469799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2192758 + ... + 2192775.

Almost surely, 2^39469797 is an apocalyptic number.

It is an amenable number.

39469797 is a deficient number, since it is larger than the sum of its proper divisors (17542145).

39469797 is a wasteful number, since it uses less digits than its factorization.

39469797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385539 (or 4385536 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 54.

The square root of 39469797 is about 6282.4992638281. The cubic root of 39469797 is about 340.4774060448.

Adding to 39469797 its reverse (79796493), we get a triangular number (119266290 = T₁₅₄₄₄).

The spelling of 39469797 in words is "thirty-nine million, four hundred sixty-nine thousand, seven hundred ninety-seven".