149902439 has 2 divisors, whose sum is σ = 149902440. Its totient is φ = 149902438.

The previous prime is 149902427. The next prime is 149902451. The reversal of 149902439 is 934209941.

It is a balanced prime because it is at equal distance from previous prime (149902427) and next prime (149902451).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149902439 is a prime.

It is a Chen prime.

149902439 is a modest number, since divided by 2439 gives 1499 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 149902396 and 149902405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149902409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74951219 + 74951220.

It is an arithmetic number, because the mean of its divisors is an integer number (74951220).

Almost surely, 2^149902439 is an apocalyptic number.

149902439 is a deficient number, since it is larger than the sum of its proper divisors (1).

149902439 is an equidigital number, since it uses as much as digits as its factorization.

149902439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 149902439 is about 12243.4651549306. The cubic root of 149902439 is about 531.2140662385.

The spelling of 149902439 in words is "one hundred forty-nine million, nine hundred two thousand, four hundred thirty-nine".