39920402 has 4 divisors (see below), whose sum is σ = 59880606. Its totient is φ = 19960200.

The previous prime is 39920393. The next prime is 39920411. The reversal of 39920402 is 20402993.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (39920393) and next prime (39920411).

It can be written as a sum of positive squares in only one way, i.e., 25715041 + 14205361 = 5071^2 + 3769^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9980099 + ... + 9980102.

Almost surely, 2^39920402 is an apocalyptic number.

39920402 is a deficient number, since it is larger than the sum of its proper divisors (19960204).

39920402 is a wasteful number, since it uses less digits than its factorization.

39920402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19960203.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 39920402 is about 6318.2594122116. The cubic root of 39920402 is about 341.7681875856.

The spelling of 39920402 in words is "thirty-nine million, nine hundred twenty thousand, four hundred two".